#0A4239
Closest named color: Evergreen (#05472A). oklch(34.2% 0.057 179.1), rgb(10, 66, 57).
Aa
White text reads best on this color (11.34:1).
About this color
#0A4239 is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.057 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Evergreen (#05472A), ΔE 0.035 away. White text reads best on it, at 11.34:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Evergreen (#05472A) |
| Black text | 1.85:1 |
| White text | 11.34:1 |
Values
| HEX | #0A4239 |
| RGB | rgb(10, 66, 57) |
| HSL | hsl(170, 74%, 15%) |
| OKLCH | oklch(34.2% 0.057 179.1) |
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 #0A4239 | 11.34:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #0A4239 | 1.85:1 | Fails | Lc 8.0 | Not readable |
| #0A4239 text on white | 11.34:1 | AAA | Lc 95.9 | Preferred for body text |
| #0A4239 text on black | 1.85:1 | Fails | Lc 0.0 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDEA
oklch(93.7% 0.012 178)
-
Step 200
200
#C9DFD9
oklch(88.6% 0.025 177.6)
-
Step 300
300
#A4CAC1
oklch(80.9% 0.042 179.2)
-
Step 400
400
#6FAFA1
oklch(70.7% 0.069 178.8)
-
Step 500
500
#439B8A
oklch(63.1% 0.089 178.6)
-
Step 600
600
#188574
oklch(55.5% 0.096 179)
-
Step 700
700
#037162
oklch(49.2% 0.089 179.2)
-
Step 800
800
#0D5C50
oklch(42.7% 0.074 179.3)
-
Step 900
900 (this color)
#0A4239
oklch(34.2% 0.057 179.1)
-
Step 950
950
#0F2C27
oklch(26.9% 0.036 180.5)
#0A4239 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) | #3F3D39 | 0.061 |
| Deuteranopia (no green cones) | #37383A | 0.057 |
| Tritanopia (no blue cones) | #00433F | 0.010 |
| Achromatopsia (no color) | #3A3A3A | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A4239
#0A4239
oklch(34.2% 0.057 179.1)
- #502B38
#502B38
oklch(34.1% 0.057 358.1)
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 #0A4239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Evergreen #05472A ΔE 0.035
- Dark Teal #014D4E ΔE 0.044
- Midnight Green #073B4C ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.052
- Pine Green #0A481E ΔE 0.053
- Dark Blue Green #005249 ΔE 0.053
- Charcoal #264653 ΔE 0.054
- Onyx #343A40 ΔE 0.054
Use #0A4239 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.