#3F8788
Closest named color: Dark Cyan (#008B8B). oklch(57.8% 0.072 196.6), rgb(63, 135, 136).
Aa
Black text reads best on this color (5.03:1).
About this color
#3F8788 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.072 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.027 away. Black text reads best on it, at 5.03:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.03:1 |
| White text | 4.17:1 |
Values
| HEX | #3F8788 |
| RGB | rgb(63, 135, 136) |
| HSL | hsl(181, 37%, 39%) |
| OKLCH | oklch(57.8% 0.072 196.6) |
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 #3F8788 | 4.17:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #3F8788 | 5.03:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #3F8788 text on white | 4.17:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #3F8788 text on black | 5.03:1 | AA | Lc -33.1 | Non-text elements, placeholder text |
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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDD
oklch(88.5% 0.018 196.8)
-
Step 300
300
#A9C7C7
oklch(80.8% 0.032 196.5)
-
Step 400
400
#7AABAB
oklch(70.7% 0.052 196)
-
Step 500
500
#569697
oklch(63.1% 0.066 196.9)
-
Step 600
600 (this color)
#3F8788
oklch(57.8% 0.072 196.6)
-
Step 700
700
#296C6D
oklch(49% 0.067 196.6)
-
Step 800
800
#245859
oklch(42.6% 0.055 197)
-
Step 900
900
#234949
oklch(37.8% 0.043 195.5)
-
Step 950
950
#152B2B
oklch(27.1% 0.028 195.6)
#3F8788 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) | #7F8188 | 0.075 |
| Deuteranopia (no green cones) | #737889 | 0.070 |
| Tritanopia (no blue cones) | #008B87 | 0.028 |
| Achromatopsia (no color) | #7C7C7C | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F8788
#3F8788
oklch(57.8% 0.072 196.6)
- #A0686B
#A0686B
oklch(57.8% 0.072 16)
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 #3F8788, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.027
- Dusty Teal #4C9085 ΔE 0.033
- Teal Green #0A9396 ΔE 0.038
- Teal #008080 ΔE 0.041
- Teal Blue #01889F ΔE 0.041
- Grey Blue #647D8E ΔE 0.050
- Sea #3C9992 ΔE 0.052
- Steel Grey #6F828A ΔE 0.054
Use #3F8788 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.