#39A4B5
Closest named color: Turquoise Blue (#06B1C4). oklch(66.5% 0.098 210), rgb(57, 164, 181).
Aa
Black text reads best on this color (7.15:1).
About this color
#39A4B5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.098 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.037 away. Black text reads best on it, at 7.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.15:1 |
| White text | 2.93:1 |
Values
| HEX | #39A4B5 |
| RGB | rgb(57, 164, 181) |
| HSL | hsl(188, 52%, 47%) |
| OKLCH | oklch(66.5% 0.098 210) |
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 #39A4B5 | 2.93:1 | Fails | Lc -60.8 | Content text, not long reading |
| Black text on #39A4B5 | 7.15:1 | AAA | Lc 48.5 | Large or bold text, headings |
| #39A4B5 text on white | 2.93:1 | Fails | Lc 55.5 | Large or bold text, headings |
| #39A4B5 text on black | 7.15:1 | AAA | Lc -46.3 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0EDEF
oklch(93.7% 0.014 207.9)
-
Step 200
200
#C6DEE3
oklch(88.4% 0.026 211.6)
-
Step 300
300
#9DCAD2
oklch(81% 0.049 209.6)
-
Step 400
400
#63AEBB
oklch(70.7% 0.077 209.9)
-
Step 500
500 (this color)
#39A4B5
oklch(66.5% 0.098 210)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#034A54
oklch(37.5% 0.064 210.4)
-
Step 950
950
#082C31
oklch(27.1% 0.04 208.4)
#39A4B5 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) | #959EB6 | 0.092 |
| Deuteranopia (no green cones) | #8491B5 | 0.085 |
| Tritanopia (no blue cones) | #00ACA9 | 0.037 |
| Achromatopsia (no color) | #979797 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39A4B5
#39A4B5
oklch(66.5% 0.098 210)
- #C97C70
#C97C70
oklch(66.5% 0.099 29.5)
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 #39A4B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.037
- Cadet Blue #5F9EA0 ΔE 0.038
- Light Sea Green #20B2AA ΔE 0.049
- Sea #3C9992 ΔE 0.054
- Greyblue #77A1B5 ΔE 0.054
- Dull Teal #5F9E8F ΔE 0.056
- Persian Green #2A9D8F ΔE 0.058
- Grey Teal #5E9B8A ΔE 0.062
Use #39A4B5 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.