Seafoam Blue #78D1B6
Seafoam Blue is a light, moderately saturated teal or cyan with hex code #78D1B6 and RGB rgb(120, 209, 182).
Aa
Black text reads best on this color (11.59:1).
About this color
#78D1B6 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 80%, its chroma 0.095 and its hue 172°. Its hue sits on the cool side of the wheel. It is the named color Seafoam Blue. Black text reads best on it, at 11.59:1.
| Hue family | Teals and cyans |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Seafoam Blue |
| Black text | 11.59:1 |
| White text | 1.81:1 |
Colors that go with Seafoam Blue
Matches found by rotating Seafoam Blue around the OKLCH hue wheel, each labelled with the closest name in our list.
Complementary
The opposite hue (180°).
Analogous
Neighbouring hues, 30° either side.
Triadic
Three hues spaced 120° apart.
Color palettes with Seafoam Blue
Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Seafoam Blue, closest first.
Similar named colors
The eight named colors closest to Seafoam Blue, with their ΔE distance.
- Pale Teal #82CBB2 ΔE 0.017
- Medium Aquamarine #66CDAA ΔE 0.026
- Tiffany Blue #94D2BD ΔE 0.031
- Medium Turquoise #48D1CC ΔE 0.042
- Turquoise #40E0D0 ΔE 0.050
- Light Teal #90E4C1 ΔE 0.059
- Dark Sea Green #8FBC8F ΔE 0.064
- Dark Turquoise #00CED1 ΔE 0.065
More about Seafoam Blue
How to make Seafoam Blue
A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.
- 4 parts white
- 2 parts blue
- 1 part yellow
Recipe result: #90CBB3, a difference of ΔE 0.027 from Seafoam Blue. That is very close: most people will not see the difference.
Codes for Seafoam Blue in every format
| HEX | #78D1B6 |
| RGB | rgb(120, 209, 182) |
| HSL | hsl(162, 49%, 65%) |
| OKLCH | oklch(79.7% 0.095 172.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #78D1B6 | 1.81:1 | Fails | Lc -37.7 | Non-text elements, placeholder text |
| Black text on #78D1B6 | 11.59:1 | AAA | Lc 70.3 | Content text, not long reading |
| #78D1B6 text on white | 1.81:1 | Fails | Lc 33.6 | Non-text elements, placeholder text |
| #78D1B6 text on black | 11.59:1 | AAA | Lc -69.0 | Content text, not long reading |
Shades and tints of Seafoam Blue
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 300.
-
Step 50
50
#EDF8F4
oklch(97% 0.013 172.4)
-
Step 100
100
#D8F0E8
oklch(93.5% 0.027 173.7)
-
Step 200
200
#B7E5D5
oklch(88.5% 0.052 171.8)
-
Step 300
300 (this color)
#78D1B6
oklch(79.7% 0.095 172.2)
-
Step 400
400
#00BB97
oklch(70.6% 0.136 172.4)
-
Step 500
500
#00A181
oklch(63.2% 0.122 172)
-
Step 600
600
#00876C
oklch(55.5% 0.108 172.1)
-
Step 700
700
#00725B
oklch(49.2% 0.095 172.3)
-
Step 800
800
#005D4A
oklch(42.6% 0.082 172.5)
-
Step 900
900
#004E3D
oklch(37.8% 0.073 171.8)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
Seafoam Blue with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #CCC7B5 | 0.098 |
| Deuteranopia (no green cones) | #BDBCB8 | 0.094 |
| Tritanopia (no blue cones) | #5AD2C9 | 0.032 |
| Achromatopsia (no color) | #C0C0C0 | 0.096 |
Use Seafoam Blue in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.