#39D1B1
Closest named color: Medium Aquamarine (#66CDAA). oklch(77.5% 0.133 175), rgb(57, 209, 177).
Aa
Black text reads best on this color (10.92:1).
About this color
#39D1B1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.133 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.026 away. Black text reads best on it, at 10.92:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.92:1 |
| White text | 1.92:1 |
Values
| HEX | #39D1B1 |
| RGB | rgb(57, 209, 177) |
| HSL | hsl(167, 62%, 52%) |
| OKLCH | oklch(77.5% 0.133 175) |
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 #39D1B1 | 1.92:1 | Fails | Lc -40.6 | Non-text elements, placeholder text |
| Black text on #39D1B1 | 10.92:1 | AAA | Lc 67.6 | Content text, not long reading |
| #39D1B1 text on white | 1.92:1 | Fails | Lc 36.3 | Non-text elements, placeholder text |
| #39D1B1 text on black | 10.92:1 | AAA | Lc -66.2 | Content text, not long reading |
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 300.
-
Step 50
50
#EAFAF5
oklch(97.2% 0.018 175.3)
-
Step 100
100
#D0F3E8
oklch(93.6% 0.039 174.5)
-
Step 200
200
#A5EAD6
oklch(88.6% 0.075 174.5)
-
Step 300
300 (this color)
#39D1B1
oklch(77.5% 0.133 175)
-
Step 400
400
#00BB9C
oklch(70.7% 0.133 175.1)
-
Step 500
500
#00A085
oklch(63% 0.119 175)
-
Step 600
600
#008770
oklch(55.7% 0.105 175.1)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#005D4C
oklch(42.7% 0.081 174.6)
-
Step 900
900
#004E3F
oklch(37.8% 0.072 174.1)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#39D1B1 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) | #C9C4B0 | 0.138 |
| Deuteranopia (no green cones) | #B5B5B3 | 0.132 |
| Tritanopia (no blue cones) | #00D4C8 | 0.031 |
| Achromatopsia (no color) | #BBBBBB | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39D1B1
#39D1B1
oklch(77.5% 0.133 175)
- #F891BA
#F891BA
oklch(77.6% 0.132 355.3)
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 #39D1B1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.026
- Emerald #06D6A0 ΔE 0.034
- Medium Turquoise #48D1CC ΔE 0.041
- Seafoam Blue #78D1B6 ΔE 0.044
- Dark Turquoise #00CED1 ΔE 0.050
- Turquoise #40E0D0 ΔE 0.053
- Pale Teal #82CBB2 ΔE 0.053
- Greenblue #23C48B ΔE 0.058
Use #39D1B1 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.