#39A3AF
Closest named color: Cadet Blue (#5F9EA0). oklch(66.1% 0.096 205.8), rgb(57, 163, 175).
Aa
Black text reads best on this color (7.03:1).
About this color
#39A3AF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.096 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.033 away. Black text reads best on it, at 7.03:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.03:1 |
| White text | 2.98:1 |
Values
| HEX | #39A3AF |
| RGB | rgb(57, 163, 175) |
| HSL | hsl(186, 51%, 45%) |
| OKLCH | oklch(66.1% 0.096 205.8) |
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 #39A3AF | 2.98:1 | Fails | Lc -61.5 | Content text, not long reading |
| Black text on #39A3AF | 7.03:1 | AAA | Lc 47.9 | Large or bold text, headings |
| #39A3AF text on white | 2.98:1 | Fails | Lc 56.2 | Large or bold text, headings |
| #39A3AF text on black | 7.03:1 | AAA | Lc -45.6 | 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 500.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E0EDEE
oklch(93.7% 0.014 202.5)
-
Step 200
200
#C6DEE1
oklch(88.4% 0.026 205.8)
-
Step 300
300
#9ECACF
oklch(80.9% 0.047 204.9)
-
Step 400
400
#64AEB7
oklch(70.6% 0.075 205.7)
-
Step 500
500 (this color)
#39A3AF
oklch(66.1% 0.096 205.8)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#054B52
oklch(37.8% 0.063 205.9)
-
Step 950
950
#092C30
oklch(27.1% 0.039 206)
#39A3AF 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) | #969DB0 | 0.094 |
| Deuteranopia (no green cones) | #8490AF | 0.085 |
| Tritanopia (no blue cones) | #00AAA6 | 0.032 |
| Achromatopsia (no color) | #959595 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39A3AF
#39A3AF
oklch(66.1% 0.096 205.8)
- #C67B74
#C67B74
oklch(66.1% 0.095 25.7)
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 #39A3AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.033
- Turquoise Blue #06B1C4 ΔE 0.043
- Sea #3C9992 ΔE 0.045
- Light Sea Green #20B2AA ΔE 0.047
- Dull Teal #5F9E8F ΔE 0.049
- Persian Green #2A9D8F ΔE 0.050
- Grey Teal #5E9B8A ΔE 0.055
- Blue Green #0F9B8E ΔE 0.056
Use #39A3AF 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.