#101E4A
Closest named color: Oxford Blue (#1B263B). oklch(25.3% 0.084 266.9), rgb(16, 30, 74).
Aa
White text reads best on this color (16.07:1).
About this color
#101E4A is a dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.084 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.045 away. White text reads best on it, at 16.07:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.07:1 |
Values
| HEX | #101E4A |
| RGB | rgb(16, 30, 74) |
| HSL | hsl(226, 64%, 18%) |
| OKLCH | oklch(25.3% 0.084 266.9) |
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 #101E4A | 16.07:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #101E4A | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #101E4A text on white | 16.07:1 | AAA | Lc 102.8 | Preferred for body text |
| #101E4A text on black | 1.30:1 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#769BFF
oklch(70.7% 0.152 267.2)
-
Step 500
500
#537EFF
oklch(63.1% 0.197 266.8)
-
Step 600
600
#3A61F2
oklch(55.5% 0.222 267.1)
-
Step 700
700
#2D4FD3
oklch(49.1% 0.206 266.9)
-
Step 800
800
#2542AA
oklch(42.6% 0.17 266.8)
-
Step 900
900
#223987
oklch(37.6% 0.134 267.2)
-
Step 950
950 (this color)
#101E4A
oklch(25.3% 0.084 266.9)
#101E4A 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) | #01244C | 0.021 |
| Deuteranopia (no green cones) | #001F49 | 0.016 |
| Tritanopia (no blue cones) | #002930 | 0.069 |
| Achromatopsia (no color) | #212121 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101E4A
#101E4A
oklch(25.3% 0.084 266.9)
- #2D2000
#2D2000
oklch(25.2% 0.052 86.4)
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 #101E4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.045
- Navy Blue #001146 ΔE 0.047
- Dark Indigo #1F0954 ΔE 0.052
- Dark #1B2431 ΔE 0.057
- Marine #042E60 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.062
- Darkblue #030764 ΔE 0.068
- Midnight Blue #191970 ΔE 0.070
Use #101E4A 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.