#10434C
Closest named color: Charcoal (#264653). oklch(35.4% 0.054 211.9), rgb(16, 67, 76).
Aa
White text reads best on this color (10.88:1).
About this color
#10434C is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.054 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.026 away. White text reads best on it, at 10.88:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.92:1 |
| White text | 10.88:1 |
Values
| HEX | #10434C |
| RGB | rgb(16, 67, 76) |
| HSL | hsl(189, 65%, 18%) |
| OKLCH | oklch(35.4% 0.054 211.9) |
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 #10434C | 10.88:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #10434C | 1.92:1 | Fails | Lc 9.0 | Not readable |
| #10434C text on white | 10.88:1 | AAA | Lc 94.9 | Preferred for body text |
| #10434C text on black | 1.92:1 | Fails | Lc -7.7 | 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
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A3C8D0
oklch(80.9% 0.041 212.3)
-
Step 400
400
#6FACB8
oklch(70.7% 0.065 211.4)
-
Step 500
500
#4497A7
oklch(63.2% 0.083 212.1)
-
Step 600
600
#1B8192
oklch(55.6% 0.09 212)
-
Step 700
700
#086D7C
oklch(49.1% 0.084 211.6)
-
Step 800
800
#0F5965
oklch(42.8% 0.069 211.6)
-
Step 900
900 (this color)
#10434C
oklch(35.4% 0.054 211.9)
-
Step 950
950
#102B30
oklch(27% 0.034 211.3)
#10434C 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) | #3C404D | 0.050 |
| Deuteranopia (no green cones) | #343A4C | 0.046 |
| Tritanopia (no blue cones) | #004746 | 0.021 |
| Achromatopsia (no color) | #3D3D3D | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10434C
#10434C
oklch(35.4% 0.054 211.9)
- #54312A
#54312A
oklch(35.5% 0.053 32)
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 #10434C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.029
- Midnight Green #073B4C ΔE 0.029
- Dark Teal #014D4E ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.038
- Onyx #343A40 ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.053
Use #10434C 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.