#0B403A
Closest named color: Midnight Green (#073B4C). oklch(33.6% 0.054 183.8), rgb(11, 64, 58).
Aa
White text reads best on this color (11.61:1).
About this color
#0B403A is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.054 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.041 away. White text reads best on it, at 11.61:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.80:1 |
| White text | 11.61:1 |
Values
| HEX | #0B403A |
| RGB | rgb(11, 64, 58) |
| HSL | hsl(173, 71%, 15%) |
| OKLCH | oklch(33.6% 0.054 183.8) |
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 #0B403A | 11.61:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #0B403A | 1.80:1 | Fails | Lc 7.5 | Not readable |
| #0B403A text on white | 11.61:1 | AAA | Lc 96.4 | Preferred for body text |
| #0B403A text on black | 1.80:1 | 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
#E2EDEB
oklch(93.7% 0.012 184.1)
-
Step 200
200
#CADEDB
oklch(88.5% 0.022 186)
-
Step 300
300
#A4CAC3
oklch(80.9% 0.042 182.8)
-
Step 400
400
#71AEA5
oklch(70.7% 0.065 184.2)
-
Step 500
500
#469A8F
oklch(63.1% 0.083 183.9)
-
Step 600
600
#1F8479
oklch(55.5% 0.09 184.1)
-
Step 700
700
#0D7066
oklch(49.1% 0.084 183.9)
-
Step 800
800
#125B53
oklch(42.6% 0.069 184)
-
Step 900
900 (this color)
#0B403A
oklch(33.6% 0.054 183.8)
-
Step 950
950
#102C28
oklch(27% 0.035 183.1)
#0B403A 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) | #3C3C3A | 0.057 |
| Deuteranopia (no green cones) | #35363B | 0.055 |
| Tritanopia (no blue cones) | #00423E | 0.008 |
| Achromatopsia (no color) | #393939 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B403A
#0B403A
oklch(33.6% 0.054 183.8)
- #4E2B34
#4E2B34
oklch(33.7% 0.053 3.7)
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 #0B403A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.041
- Evergreen #05472A ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.047
- Dark Teal #014D4E ΔE 0.048
- Onyx #343A40 ΔE 0.051
- Charcoal #264653 ΔE 0.053
- Pakistan Green #283618 ΔE 0.055
- Charcoal Grey #3C4142 ΔE 0.059
Use #0B403A 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.