#39B5B4
Closest named color: Light Sea Green (#20B2AA). oklch(70.7% 0.106 194.2), rgb(57, 181, 180).
Aa
Black text reads best on this color (8.44:1).
About this color
#39B5B4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.106 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.020 away. Black text reads best on it, at 8.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 8.44:1 |
| White text | 2.48:1 |
Values
| HEX | #39B5B4 |
| RGB | rgb(57, 181, 180) |
| HSL | hsl(180, 52%, 47%) |
| OKLCH | oklch(70.7% 0.106 194.2) |
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 #39B5B4 | 2.48:1 | Fails | Lc -53.5 | Large or bold text, headings |
| Black text on #39B5B4 | 8.44:1 | AAA | Lc 55.5 | Large or bold text, headings |
| #39B5B4 text on white | 2.48:1 | Fails | Lc 48.5 | Large or bold text, headings |
| #39B5B4 text on black | 8.44:1 | AAA | Lc -53.5 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF7F7
oklch(97% 0.008 197)
-
Step 100
100
#DCEEEE
oklch(93.6% 0.019 196.8)
-
Step 200
200
#BEE1E0
oklch(88.4% 0.037 194.4)
-
Step 300
300
#8DCFCD
oklch(81% 0.067 193.5)
-
Step 400
400 (this color)
#39B5B4
oklch(70.7% 0.106 194.2)
-
Step 500
500
#009D9D
oklch(63% 0.108 194.8)
-
Step 600
600
#008484
oklch(55.5% 0.095 194.8)
-
Step 700
700
#006F6F
oklch(49% 0.084 194.8)
-
Step 800
800
#005B5B
oklch(42.7% 0.073 194.8)
-
Step 900
900
#004C4C
oklch(37.7% 0.064 194.8)
-
Step 950
950
#002D2D
oklch(26.9% 0.046 194.8)
#39B5B4 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) | #A9ACB4 | 0.110 |
| Deuteranopia (no green cones) | #979EB5 | 0.104 |
| Tritanopia (no blue cones) | #00BBB4 | 0.021 |
| Achromatopsia (no color) | #A4A4A4 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39B5B4
#39B5B4
oklch(70.7% 0.106 194.2)
- #DA848C
#DA848C
oklch(70.6% 0.106 14.1)
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 #39B5B4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.020
- Topaz #13BBAF ΔE 0.024
- Turquoise Blue #06B1C4 ΔE 0.032
- Greeny Blue #42B395 ΔE 0.044
- Cadet Blue #5F9EA0 ΔE 0.064
- Dark Turquoise #00CED1 ΔE 0.070
- Dull Teal #5F9E8F ΔE 0.071
- Greyblue #77A1B5 ΔE 0.072
Use #39B5B4 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.