#10424D
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.2% 0.054 215.7), rgb(16, 66, 77).
Aa
White text reads best on this color (11.00:1).
About this color
#10424D is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.054 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.025 away. White text reads best on it, at 11.00:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.90:1 |
| White text | 11.00:1 |
Values
| HEX | #10424D |
| RGB | rgb(16, 66, 77) |
| HSL | hsl(191, 66%, 18%) |
| OKLCH | oklch(35.2% 0.054 215.7) |
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 #10424D | 11.00:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #10424D | 1.90:1 | Fails | Lc 8.7 | Not readable |
| #10424D text on white | 11.00:1 | AAA | Lc 95.2 | Preferred for body text |
| #10424D text on black | 1.90:1 | Fails | Lc -7.4 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#C9DDE3
oklch(88.4% 0.023 217.7)
-
Step 300
300
#A4C8D1
oklch(81% 0.04 214.6)
-
Step 400
400
#70ABBB
oklch(70.7% 0.065 216.7)
-
Step 500
500
#4596A9
oklch(63% 0.083 215.4)
-
Step 600
600
#1E8095
oklch(55.6% 0.091 216.1)
-
Step 700
700
#0B6C7F
oklch(49% 0.084 216.1)
-
Step 800
800
#115867
oklch(42.6% 0.07 215.9)
-
Step 900
900 (this color)
#10424D
oklch(35.2% 0.054 215.7)
-
Step 950
950
#102B31
oklch(27.1% 0.034 214.3)
#10424D 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) | #3A404E | 0.048 |
| Deuteranopia (no green cones) | #32394D | 0.044 |
| Tritanopia (no blue cones) | #004645 | 0.024 |
| Achromatopsia (no color) | #3C3C3C | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10424D
#10424D
oklch(35.2% 0.054 215.7)
- #543027
#543027
oklch(35.2% 0.055 34.8)
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 #10424D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.025
- Midnight Green #073B4C ΔE 0.025
- Charcoal #264653 ΔE 0.027
- Dark Teal #014D4E ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.037
- Onyx #343A40 ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.051
Use #10424D 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.