#10434F
Closest named color: Charcoal (#264653). oklch(35.6% 0.056 217.1), rgb(16, 67, 79).
Aa
White text reads best on this color (10.83:1).
About this color
#10434F is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.056 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.024 away. White text reads best on it, at 10.83:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.93:1 |
| White text | 10.83:1 |
Values
| HEX | #10434F |
| RGB | rgb(16, 67, 79) |
| HSL | hsl(191, 66%, 19%) |
| OKLCH | oklch(35.6% 0.056 217.1) |
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 #10434F | 10.83:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #10434F | 1.93:1 | Fails | Lc 9.1 | Not readable |
| #10434F text on white | 10.83:1 | AAA | Lc 94.8 | Preferred for body text |
| #10434F text on black | 1.93:1 | Fails | Lc -7.8 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C9DDE3
oklch(88.4% 0.023 217.7)
-
Step 300
300
#A3C8D2
oklch(80.9% 0.042 216)
-
Step 400
400
#6FABBC
oklch(70.6% 0.067 217.6)
-
Step 500
500
#4496AB
oklch(63.1% 0.085 217.2)
-
Step 600
600
#1A8097
oklch(55.6% 0.093 217.6)
-
Step 700
700
#066C81
oklch(49.1% 0.087 217.8)
-
Step 800
800
#0E5868
oklch(42.6% 0.071 216.8)
-
Step 900
900 (this color)
#10434F
oklch(35.6% 0.056 217.1)
-
Step 950
950
#0F2B32
oklch(27.1% 0.036 216.6)
#10434F 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) | #3B4150 | 0.048 |
| Deuteranopia (no green cones) | #323A4F | 0.044 |
| Tritanopia (no blue cones) | #004747 | 0.024 |
| Achromatopsia (no color) | #3D3D3D | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10434F
#10434F
oklch(35.6% 0.056 217.1)
- #553127
#553127
oklch(35.5% 0.056 36.3)
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 #10434F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.027
- Midnight Green #073B4C ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.034
- Dark Teal #014D4E ΔE 0.034
- Onyx #343A40 ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.052
Use #10434F 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.