#10192B
Closest named color: Rich Black (#0D1B2A). oklch(21.5% 0.038 263.3), rgb(16, 25, 43).
Aa
White text reads best on this color (17.55:1).
About this color
#10192B is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.038 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.009 away. White text reads best on it, at 17.55:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.55:1 |
Values
| HEX | #10192B |
| RGB | rgb(16, 25, 43) |
| HSL | hsl(220, 46%, 12%) |
| OKLCH | oklch(21.5% 0.038 263.3) |
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 #10192B | 17.55:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #10192B | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #10192B text on white | 17.55:1 | AAA | Lc 104.3 | Preferred for body text |
| #10192B text on black | 1.19:1 | 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 950.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B2C1DF
oklch(80.9% 0.046 264.3)
-
Step 400
400
#89A1CE
oklch(70.7% 0.072 262.8)
-
Step 500
500
#6C89C2
oklch(63.1% 0.093 263.3)
-
Step 600
600
#5472AE
oklch(55.6% 0.1 263.3)
-
Step 700
700
#445F96
oklch(49% 0.094 263.5)
-
Step 800
800
#384E79
oklch(42.6% 0.077 262.9)
-
Step 900
900
#314162
oklch(37.7% 0.061 264)
-
Step 950
950 (this color)
#10192B
oklch(21.5% 0.038 263.3)
#10192B 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) | #121A2C | 0.005 |
| Deuteranopia (no green cones) | #0F182B | 0.004 |
| Tritanopia (no blue cones) | #051D20 | 0.033 |
| Achromatopsia (no color) | #191919 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10192B
#10192B
oklch(21.5% 0.038 263.3)
- #221803
#221803
oklch(21.6% 0.039 84.6)
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 #10192B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.009
- Dark #1B2431 ΔE 0.044
- Rich Navy #001219 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.055
- Jet #212529 ΔE 0.056
- Navy Blue #001146 ΔE 0.064
- Almost Black #070D0D ΔE 0.072
- Dark Navy #000435 ΔE 0.079
Use #10192B 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.