#10213E
Closest named color: Oxford Blue (#1B263B). oklch(25% 0.06 260.4), rgb(16, 33, 62).
Aa
White text reads best on this color (16.04:1).
About this color
#10213E is a dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.060 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.026 away. White text reads best on it, at 16.04:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.04:1 |
Values
| HEX | #10213E |
| RGB | rgb(16, 33, 62) |
| HSL | hsl(218, 59%, 15%) |
| OKLCH | oklch(25% 0.06 260.4) |
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 #10213E | 16.04:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #10213E | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #10213E text on white | 16.04:1 | AAA | Lc 102.9 | Preferred for body text |
| #10213E 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CADAF4
oklch(88.4% 0.04 260.1)
-
Step 300
300
#A7C2EF
oklch(81% 0.07 260.6)
-
Step 400
400
#77A1E7
oklch(70.7% 0.113 260.3)
-
Step 500
500
#5488E0
oklch(63.2% 0.144 260.3)
-
Step 600
600
#3870CE
oklch(55.7% 0.157 260.1)
-
Step 700
700
#2B5DB2
oklch(49.1% 0.146 260.3)
-
Step 800
800
#254C90
oklch(42.7% 0.121 260.6)
-
Step 900
900
#224073
oklch(37.7% 0.095 260.3)
-
Step 950
950 (this color)
#10213E
oklch(25% 0.06 260.4)
#10213E 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) | #14243F | 0.012 |
| Deuteranopia (no green cones) | #0D1F3D | 0.008 |
| Tritanopia (no blue cones) | #00282C | 0.050 |
| Achromatopsia (no color) | #212121 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10213E
#10213E
oklch(25% 0.06 260.4)
- #2E1E00
#2E1E00
oklch(24.9% 0.051 80.2)
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 #10213E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.026
- Dark #1B2431 ΔE 0.033
- Rich Black #0D1B2A ΔE 0.041
- Jet #212529 ΔE 0.052
- Navy Blue #001146 ΔE 0.058
- Space Cadet #2B2D42 ΔE 0.061
- Marine #042E60 ΔE 0.069
- Gunmetal #293241 ΔE 0.072
Use #10213E 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.