#0A515B
Closest named color: Deep Teal (#00555A). oklch(40% 0.066 209.8), rgb(10, 81, 91).
Aa
White text reads best on this color (8.97:1).
About this color
#0A515B is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.066 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.014 away. White text reads best on it, at 8.97:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.34:1 |
| White text | 8.97:1 |
Values
| HEX | #0A515B |
| RGB | rgb(10, 81, 91) |
| HSL | hsl(187, 80%, 20%) |
| OKLCH | oklch(40% 0.066 209.8) |
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 #0A515B | 8.97:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #0A515B | 2.34:1 | Fails | Lc 13.8 | Not readable |
| #0A515B text on white | 8.97:1 | AAA | Lc 90.2 | Preferred for body text |
| #0A515B text on black | 2.34:1 | Fails | Lc -12.1 | Not readable |
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 900.
-
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
#C5DEE3
oklch(88.4% 0.027 211.1)
-
Step 300
300
#9CCAD2
oklch(80.9% 0.049 209.3)
-
Step 400
400
#61AEBC
oklch(70.7% 0.079 210.6)
-
Step 500
500
#259AAB
oklch(63.2% 0.101 209.7)
-
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 (this color)
#0A515B
oklch(40% 0.066 209.8)
-
Step 950
950
#072C32
oklch(27.1% 0.042 210.6)
#0A515B 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) | #484E5C | 0.061 |
| Deuteranopia (no green cones) | #3E465B | 0.056 |
| Tritanopia (no blue cones) | #005554 | 0.021 |
| Achromatopsia (no color) | #494949 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A515B
#0A515B
oklch(40% 0.066 209.8)
- #663932
#663932
oklch(39.8% 0.066 29.7)
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 #0A515B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.014
- Dark Teal #014D4E ΔE 0.024
- Dark Slate Gray #2F4F4F ΔE 0.031
- Dark Blue Green #005249 ΔE 0.033
- Charcoal #264653 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.040
- Petrol #005F6A ΔE 0.046
- Dark Green Blue #1F6357 ΔE 0.065
Use #0A515B 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.