#0A403F
Closest named color: Midnight Green (#073B4C). oklch(33.8% 0.053 193), rgb(10, 64, 63).
Aa
White text reads best on this color (11.55:1).
About this color
#0A403F is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.053 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.033 away. White text reads best on it, at 11.55:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.81:1 |
| White text | 11.55:1 |
Values
| HEX | #0A403F |
| RGB | rgb(10, 64, 63) |
| HSL | hsl(179, 73%, 15%) |
| OKLCH | oklch(33.8% 0.053 193) |
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 #0A403F | 11.55:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #0A403F | 1.81:1 | Fails | Lc 7.6 | Not readable |
| #0A403F text on white | 11.55:1 | AAA | Lc 96.3 | Preferred for body text |
| #0A403F text on black | 1.81:1 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#C9DEDD
oklch(88.5% 0.022 193.3)
-
Step 300
300
#A4C9C8
oklch(80.9% 0.039 194.4)
-
Step 400
400
#70AEAB
oklch(70.8% 0.064 191.9)
-
Step 500
500
#459997
oklch(63.1% 0.081 193.2)
-
Step 600
600
#1C8382
oklch(55.5% 0.088 193.9)
-
Step 700
700
#086F6E
oklch(49.1% 0.082 193.7)
-
Step 800
800
#105B59
oklch(42.8% 0.068 192.1)
-
Step 900
900 (this color)
#0A403F
oklch(33.8% 0.053 193)
-
Step 950
950
#102C2B
oklch(27.1% 0.034 192.2)
#0A403F 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) | #3B3C3F | 0.055 |
| Deuteranopia (no green cones) | #34373F | 0.052 |
| Tritanopia (no blue cones) | #004240 | 0.007 |
| Achromatopsia (no color) | #393939 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A403F
#0A403F
oklch(33.8% 0.053 193)
- #4F2C30
#4F2C30
oklch(33.9% 0.052 12.8)
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 #0A403F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.033
- Dark Blue Grey #1F3B4D ΔE 0.039
- Dark Teal #014D4E ΔE 0.044
- Charcoal #264653 ΔE 0.047
- Onyx #343A40 ΔE 0.047
- Evergreen #05472A ΔE 0.050
- Gunmetal #293241 ΔE 0.055
- Charcoal Grey #3C4142 ΔE 0.057
Use #0A403F 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.