#39B9B0
Closest named color: Topaz (#13BBAF). oklch(71.5% 0.11 188.2), rgb(57, 185, 176).
Aa
Black text reads best on this color (8.74:1).
About this color
#39B9B0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.110 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.013 away. Black text reads best on it, at 8.74:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.74:1 |
| White text | 2.40:1 |
Values
| HEX | #39B9B0 |
| RGB | rgb(57, 185, 176) |
| HSL | hsl(176, 53%, 47%) |
| OKLCH | oklch(71.5% 0.11 188.2) |
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 #39B9B0 | 2.40:1 | Fails | Lc -51.9 | Large or bold text, headings |
| Black text on #39B9B0 | 8.74:1 | AAA | Lc 57.0 | Large or bold text, headings |
| #39B9B0 text on white | 2.40:1 | Fails | Lc 47.0 | Large or bold text, headings |
| #39B9B0 text on black | 8.74:1 | AAA | Lc -55.1 | 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
#EFF8F6
oklch(97.2% 0.01 181.4)
-
Step 100
100
#DCEEEC
oklch(93.5% 0.019 188.8)
-
Step 200
200
#BEE2DE
oklch(88.6% 0.038 188.3)
-
Step 300
300
#8CCFC9
oklch(80.8% 0.068 188.8)
-
Step 400
400 (this color)
#39B9B0
oklch(71.5% 0.11 188.2)
-
Step 500
500
#009E96
oklch(63% 0.109 188.5)
-
Step 600
600
#00857E
oklch(55.6% 0.097 188.3)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#004C48
oklch(37.6% 0.065 188.7)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#39B9B0 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) | #AFAFB0 | 0.117 |
| Deuteranopia (no green cones) | #9CA1B1 | 0.110 |
| Tritanopia (no blue cones) | #00BEB6 | 0.017 |
| Achromatopsia (no color) | #A7A7A7 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39B9B0
#39B9B0
oklch(71.5% 0.11 188.2)
- #DE8596
#DE8596
oklch(71.5% 0.111 7.9)
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 #39B9B0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.013
- Light Sea Green #20B2AA ΔE 0.025
- Greeny Blue #42B395 ΔE 0.037
- Turquoise Blue #06B1C4 ΔE 0.046
- Dark Turquoise #00CED1 ΔE 0.063
- Green Blue #01C08D ΔE 0.064
- Tea #65AB7C ΔE 0.071
- Greenblue #23C48B ΔE 0.071
Use #39B9B0 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.