#28778B
Closest named color: Ocean (#017B92). oklch(53% 0.081 218.1), rgb(40, 119, 139).
Aa
White text reads best on this color (5.11:1).
About this color
#28778B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.081 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.017 away. White text reads best on it, at 5.11:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #28778B |
| RGB | rgb(40, 119, 139) |
| HSL | hsl(192, 55%, 35%) |
| OKLCH | oklch(53% 0.081 218.1) |
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 #28778B | 5.11:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #28778B | 4.10:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #28778B text on white | 5.11:1 | AA | Lc 75.0 | Fine for body text |
| #28778B text on black | 4.10:1 | AA large text | Lc -26.7 | Dividers and decoration only |
Tints and shades
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 600.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A7C7D0
oklch(80.9% 0.037 216.6)
-
Step 400
400
#77AAB9
oklch(70.7% 0.058 218.1)
-
Step 500
500
#5195A7
oklch(63.2% 0.074 217)
-
Step 600
600 (this color)
#28778B
oklch(53% 0.081 218.1)
-
Step 700
700
#226B7D
oklch(49.1% 0.075 217.7)
-
Step 800
800
#1F5766
oklch(42.7% 0.062 218.7)
-
Step 900
900
#204853
oklch(37.8% 0.049 218.2)
-
Step 950
950
#142A30
oklch(27% 0.03 217.4)
#28778B 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) | #6A748C | 0.069 |
| Deuteranopia (no green cones) | #5C698B | 0.063 |
| Tritanopia (no blue cones) | #007E7D | 0.038 |
| Achromatopsia (no color) | #6E6E6E | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28778B
#28778B
oklch(53% 0.081 218.1)
- #945B49
#945B49
oklch(53% 0.081 38.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #28778B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.017
- Sea Blue #047495 ΔE 0.025
- Deep Aqua #08787F ΔE 0.026
- Metallic Blue #4F738E ΔE 0.037
- Bluegreen #017A79 ΔE 0.037
- Teal #008080 ΔE 0.039
- Ocean Blue #03719C ΔE 0.039
- Cerulean #457B9D ΔE 0.040
Use #28778B 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.