#0A3E40
Closest named color: Midnight Green (#073B4C). oklch(33.3% 0.052 198.9), rgb(10, 62, 64).
Aa
White text reads best on this color (11.82:1).
About this color
#0A3E40 is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.052 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.027 away. White text reads best on it, at 11.82:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.77:1 |
| White text | 11.82:1 |
Values
| HEX | #0A3E40 |
| RGB | rgb(10, 62, 64) |
| HSL | hsl(182, 73%, 15%) |
| OKLCH | oklch(33.3% 0.052 198.9) |
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 #0A3E40 | 11.82:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #0A3E40 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #0A3E40 text on white | 11.82:1 | AAA | Lc 96.8 | Preferred for body text |
| #0A3E40 text on black | 1.77:1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CADEDE
oklch(88.6% 0.021 196.8)
-
Step 300
300
#A4C9CA
oklch(80.9% 0.039 198.4)
-
Step 400
400
#71ADAF
oklch(70.7% 0.062 198.5)
-
Step 500
500
#47989B
oklch(63.1% 0.079 198.6)
-
Step 600
600
#208286
oklch(55.5% 0.086 199.1)
-
Step 700
700
#0F6E72
oklch(49.1% 0.08 199.5)
-
Step 800
800
#135A5D
oklch(42.8% 0.066 199.3)
-
Step 900
900 (this color)
#0A3E40
oklch(33.3% 0.052 198.9)
-
Step 950
950
#112B2C
oklch(26.9% 0.032 198.8)
#0A3E40 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) | #393B40 | 0.053 |
| Deuteranopia (no green cones) | #313540 | 0.049 |
| Tritanopia (no blue cones) | #00413E | 0.013 |
| Achromatopsia (no color) | #373737 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A3E40
#0A3E40
oklch(33.3% 0.052 198.9)
- #4D2B2B
#4D2B2B
oklch(33.3% 0.051 20.1)
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 #0A3E40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.027
- Dark Blue Grey #1F3B4D ΔE 0.034
- Onyx #343A40 ΔE 0.046
- Charcoal #264653 ΔE 0.049
- Gunmetal #293241 ΔE 0.049
- Dark Teal #014D4E ΔE 0.050
- Evergreen #05472A ΔE 0.057
- Charcoal Grey #3C4142 ΔE 0.059
Use #0A3E40 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.