#101E3C
Closest named color: Oxford Blue (#1B263B). oklch(24.1% 0.061 263.6), rgb(16, 30, 60).
Aa
White text reads best on this color (16.49:1).
About this color
#101E3C is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.061 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.034 away. White text reads best on it, at 16.49:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.27:1 |
| White text | 16.49:1 |
Values
| HEX | #101E3C |
| RGB | rgb(16, 30, 60) |
| HSL | hsl(221, 58%, 15%) |
| OKLCH | oklch(24.1% 0.061 263.6) |
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 #101E3C | 16.49:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #101E3C | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #101E3C text on white | 16.49:1 | AAA | Lc 103.3 | Preferred for body text |
| #101E3C text on black | 1.27:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCDAF4
oklch(88.6% 0.039 262.9)
-
Step 300
300
#A9C1F0
oklch(80.9% 0.072 263.7)
-
Step 400
400
#7B9FE9
oklch(70.6% 0.116 263.9)
-
Step 500
500
#5A86E2
oklch(63.2% 0.147 263.5)
-
Step 600
600
#416DD0
oklch(55.6% 0.161 263.9)
-
Step 700
700
#335BB4
oklch(49.2% 0.149 263.7)
-
Step 800
800
#2A4B91
oklch(42.7% 0.122 263.2)
-
Step 900
900
#263F74
oklch(37.7% 0.096 263.5)
-
Step 950
950 (this color)
#101E3C
oklch(24.1% 0.061 263.6)
#101E3C 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) | #10213D | 0.010 |
| Deuteranopia (no green cones) | #091D3B | 0.010 |
| Tritanopia (no blue cones) | #00252A | 0.051 |
| Achromatopsia (no color) | #1F1F1F | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101E3C
#101E3C
oklch(24.1% 0.061 263.6)
- #2B1D00
#2B1D00
oklch(24.2% 0.05 83)
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 #101E3C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.034
- Rich Black #0D1B2A ΔE 0.036
- Dark #1B2431 ΔE 0.037
- Navy Blue #001146 ΔE 0.052
- Jet #212529 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.069
- Dark Indigo #1F0954 ΔE 0.070
- Marine #042E60 ΔE 0.077
Use #101E3C 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.