#10153B
Closest named color: Navy Blue (#001146). oklch(21.7% 0.073 273.1), rgb(16, 21, 59).
Aa
White text reads best on this color (17.61:1).
About this color
#10153B is a very dark, moderately saturated blue. In OKLCH its lightness is 22%, its chroma 0.073 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.034 away. White text reads best on it, at 17.61:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.19:1 |
| White text | 17.61:1 |
Values
| HEX | #10153B |
| RGB | rgb(16, 21, 59) |
| HSL | hsl(233, 57%, 15%) |
| OKLCH | oklch(21.7% 0.073 273.1) |
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 #10153B | 17.61:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #10153B | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #10153B text on white | 17.61:1 | AAA | Lc 104.3 | Preferred for body text |
| #10153B 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#AEBDF9
oklch(80.8% 0.087 273.5)
-
Step 400
400
#8599F6
oklch(70.7% 0.138 273.2)
-
Step 500
500
#697CF2
oklch(63% 0.176 273.4)
-
Step 600
600
#5262E1
oklch(55.5% 0.192 273)
-
Step 700
700
#4450C4
oklch(49.1% 0.179 273.3)
-
Step 800
800
#37439E
oklch(42.8% 0.147 272.9)
-
Step 900
900
#2F397E
oklch(37.7% 0.116 273.3)
-
Step 950
950 (this color)
#10153B
oklch(21.7% 0.073 273.1)
#10153B 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) | #001B3C | 0.025 |
| Deuteranopia (no green cones) | #00173A | 0.022 |
| Tritanopia (no blue cones) | #001E25 | 0.061 |
| Achromatopsia (no color) | #191919 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10153B
#10153B
oklch(21.7% 0.073 273.1)
- #211900
#211900
oklch(21.7% 0.044 92.8)
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 #10153B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.034
- Rich Black #0D1B2A ΔE 0.042
- Night Blue #040348 ΔE 0.055
- Dark Indigo #1F0954 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.061
- Dark #1B2431 ΔE 0.062
- Dark Navy #000435 ΔE 0.063
- Midnight Purple #280137 ΔE 0.067
Use #10153B 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.