#11203A
Closest named color: Oxford Blue (#1B263B). oklch(24.5% 0.054 260.7), rgb(17, 32, 58).
Aa
White text reads best on this color (16.25:1).
About this color
#11203A is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.054 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.027 away. White text reads best on it, at 16.25:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.25:1 |
Values
| HEX | #11203A |
| RGB | rgb(17, 32, 58) |
| HSL | hsl(218, 55%, 15%) |
| OKLCH | oklch(24.5% 0.054 260.7) |
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 #11203A | 16.25:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #11203A | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #11203A text on white | 16.25:1 | AAA | Lc 103.1 | Preferred for body text |
| #11203A text on black | 1.29:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF1
oklch(88.5% 0.035 260.4)
-
Step 300
300
#A9C2EB
oklch(80.9% 0.064 260.3)
-
Step 400
400
#7CA1E0
oklch(70.7% 0.102 260.7)
-
Step 500
500
#5A88D8
oklch(63% 0.131 260.8)
-
Step 600
600
#4071C5
oklch(55.7% 0.141 260.5)
-
Step 700
700
#325EAA
oklch(49.1% 0.131 260.5)
-
Step 800
800
#2A4D8A
oklch(42.7% 0.109 260.7)
-
Step 900
900
#26416E
oklch(37.8% 0.084 260.1)
-
Step 950
950 (this color)
#11203A
oklch(24.5% 0.054 260.7)
#11203A 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) | #15223B | 0.009 |
| Deuteranopia (no green cones) | #0F1E39 | 0.008 |
| Tritanopia (no blue cones) | #00262A | 0.046 |
| Achromatopsia (no color) | #202020 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11203A
#11203A
oklch(24.5% 0.054 260.7)
- #2D1D00
#2D1D00
oklch(24.5% 0.051 79.5)
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 #11203A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.027
- Dark #1B2431 ΔE 0.029
- Rich Black #0D1B2A ΔE 0.034
- Jet #212529 ΔE 0.048
- Navy Blue #001146 ΔE 0.060
- Space Cadet #2B2D42 ΔE 0.063
- Gunmetal #293241 ΔE 0.074
- Marine #042E60 ΔE 0.077
Use #11203A 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.