#101D44
Closest named color: Oxford Blue (#1B263B). oklch(24.5% 0.076 266.9), rgb(16, 29, 68).
Aa
White text reads best on this color (16.39:1).
About this color
#101D44 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.076 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.041 away. White text reads best on it, at 16.39:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.28:1 |
| White text | 16.39:1 |
Values
| HEX | #101D44 |
| RGB | rgb(16, 29, 68) |
| HSL | hsl(225, 62%, 16%) |
| OKLCH | oklch(24.5% 0.076 266.9) |
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 #101D44 | 16.39:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #101D44 | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #101D44 text on white | 16.39:1 | AAA | Lc 103.2 | Preferred for body text |
| #101D44 text on black | 1.28:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A6BFFB
oklch(80.8% 0.09 266.9)
-
Step 400
400
#789CFA
oklch(70.7% 0.144 266.9)
-
Step 500
500
#5780F7
oklch(63.1% 0.183 266.8)
-
Step 600
600
#3F66E6
oklch(55.7% 0.199 266.9)
-
Step 700
700
#3153C8
oklch(49% 0.186 266.8)
-
Step 800
800
#2945A1
oklch(42.6% 0.153 266.8)
-
Step 900
900
#253B80
oklch(37.6% 0.12 267.1)
-
Step 950
950 (this color)
#101D44
oklch(24.5% 0.076 266.9)
#101D44 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) | #062245 | 0.017 |
| Deuteranopia (no green cones) | #001D43 | 0.018 |
| Tritanopia (no blue cones) | #00262D | 0.061 |
| Achromatopsia (no color) | #1F1F1F | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101D44
#101D44
oklch(24.5% 0.076 266.9)
- #2B1E00
#2B1E00
oklch(24.4% 0.05 85.4)
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 #101D44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.041
- Navy Blue #001146 ΔE 0.044
- Dark #1B2431 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.051
- Dark Indigo #1F0954 ΔE 0.056
- Marine #042E60 ΔE 0.068
- Jet #212529 ΔE 0.069
- Night Blue #040348 ΔE 0.070
Use #101D44 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.