#39ADB4
Closest named color: Turquoise Blue (#06B1C4). oklch(68.7% 0.101 200.9), rgb(57, 173, 180).
Aa
Black text reads best on this color (7.81:1).
About this color
#39ADB4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.101 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.025 away. Black text reads best on it, at 7.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.81:1 |
| White text | 2.68:1 |
Values
| HEX | #39ADB4 |
| RGB | rgb(57, 173, 180) |
| HSL | hsl(183, 52%, 46%) |
| OKLCH | oklch(68.7% 0.101 200.9) |
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 #39ADB4 | 2.68:1 | Fails | Lc -57.1 | Large or bold text, headings |
| Black text on #39ADB4 | 7.81:1 | AAA | Lc 52.2 | Large or bold text, headings |
| #39ADB4 text on white | 2.68:1 | Fails | Lc 51.9 | Large or bold text, headings |
| #39ADB4 text on black | 7.81:1 | AAA | Lc -50.0 | 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
#EFF7F8
oklch(97% 0.009 205.9)
-
Step 100
100
#DDEEEF
oklch(93.7% 0.018 201.1)
-
Step 200
200
#BFE1E3
oklch(88.6% 0.036 200.9)
-
Step 300
300
#90CDD1
oklch(80.8% 0.062 201.1)
-
Step 400
400 (this color)
#39ADB4
oklch(68.7% 0.101 200.9)
-
Step 500
500
#009CA4
oklch(63% 0.107 201.2)
-
Step 600
600
#00838A
oklch(55.5% 0.094 201.4)
-
Step 700
700
#006E74
oklch(49% 0.083 201.4)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004B4F
oklch(37.5% 0.064 200.9)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#39ADB4 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) | #A0A5B5 | 0.103 |
| Deuteranopia (no green cones) | #8E98B5 | 0.095 |
| Tritanopia (no blue cones) | #00B3AF | 0.025 |
| Achromatopsia (no color) | #9E9E9E | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39ADB4
#39ADB4
oklch(68.7% 0.101 200.9)
- #D2807F
#D2807F
oklch(68.6% 0.102 20.8)
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 #39ADB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.025
- Light Sea Green #20B2AA ΔE 0.026
- Topaz #13BBAF ΔE 0.044
- Cadet Blue #5F9EA0 ΔE 0.047
- Greeny Blue #42B395 ΔE 0.054
- Dull Teal #5F9E8F ΔE 0.059
- Greyblue #77A1B5 ΔE 0.059
- Persian Green #2A9D8F ΔE 0.065
Use #39ADB4 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.