#0A9FAB
Closest named color: Sea (#3C9992). oklch(64.1% 0.108 204.4), rgb(10, 159, 171).
Aa
Black text reads best on this color (6.56:1).
About this color
#0A9FAB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.108 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.037 away. Black text reads best on it, at 6.56:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.56:1 |
| White text | 3.20:1 |
Values
| HEX | #0A9FAB |
| RGB | rgb(10, 159, 171) |
| HSL | hsl(184, 89%, 35%) |
| OKLCH | oklch(64.1% 0.108 204.4) |
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 #0A9FAB | 3.20:1 | AA large text | Lc -64.1 | Content text, not long reading |
| Black text on #0A9FAB | 6.56:1 | AA | Lc 45.4 | Large or bold text, headings |
| #0A9FAB text on white | 3.20:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #0A9FAB text on black | 6.56:1 | AA | Lc -43.1 | Non-text elements, placeholder text |
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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C4DFE2
oklch(88.5% 0.029 204.8)
-
Step 300
300
#99CBD0
oklch(80.9% 0.052 203.8)
-
Step 400
400
#59B0B9
oklch(70.7% 0.085 204.4)
-
Step 500
500 (this color)
#0A9FAB
oklch(64.1% 0.108 204.4)
-
Step 600
600
#00838D
oklch(55.6% 0.095 204.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A61
oklch(42.6% 0.073 204)
-
Step 900
900
#004B51
oklch(37.6% 0.064 204)
-
Step 950
950
#022D31
oklch(27.2% 0.045 204.4)
#0A9FAB 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) | #9198AC | 0.107 |
| Deuteranopia (no green cones) | #7D8AAB | 0.097 |
| Tritanopia (no blue cones) | #00A6A2 | 0.028 |
| Achromatopsia (no color) | #909090 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A9FAB
#0A9FAB
oklch(64.1% 0.108 204.4)
- #C6716C
#C6716C
oklch(64.2% 0.108 24.1)
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 #0A9FAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.037
- Persian Green #2A9D8F ΔE 0.041
- Teal Green #0A9396 ΔE 0.042
- Blue Green #0F9B8E ΔE 0.043
- Cadet Blue #5F9EA0 ΔE 0.047
- Turquoise Blue #06B1C4 ΔE 0.056
- Dull Teal #5F9E8F ΔE 0.057
- Light Sea Green #20B2AA ΔE 0.058
Use #0A9FAB 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.