#11283D
Closest named color: Oxford Blue (#1B263B). oklch(26.9% 0.049 248.1), rgb(17, 40, 61).
Aa
White text reads best on this color (15.05:1).
About this color
#11283D is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.049 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.013 away. White text reads best on it, at 15.05:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.39:1 |
| White text | 15.05:1 |
Values
| HEX | #11283D |
| RGB | rgb(17, 40, 61) |
| HSL | hsl(209, 56%, 15%) |
| OKLCH | oklch(26.9% 0.049 248.1) |
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 #11283D | 15.05:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #11283D | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #11283D text on white | 15.05:1 | AAA | Lc 101.8 | Preferred for body text |
| #11283D text on black | 1.39:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEE
oklch(88.6% 0.032 246.7)
-
Step 300
300
#A4C5E5
oklch(81% 0.058 247.7)
-
Step 400
400
#71A6D8
oklch(70.8% 0.093 247.8)
-
Step 500
500
#498ECD
oklch(63% 0.118 248.3)
-
Step 600
600
#2777BA
oklch(55.5% 0.129 248.2)
-
Step 700
700
#1964A1
oklch(49.1% 0.12 248.4)
-
Step 800
800
#185282
oklch(42.7% 0.099 248)
-
Step 900
900
#1B4468
oklch(37.6% 0.077 248)
-
Step 950
950 (this color)
#11283D
oklch(26.9% 0.049 248.1)
#11283D 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) | #1F293E | 0.019 |
| Deuteranopia (no green cones) | #19243D | 0.016 |
| Tritanopia (no blue cones) | #002D2F | 0.039 |
| Achromatopsia (no color) | #262626 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11283D
#11283D
oklch(26.9% 0.049 248.1)
- #362108
#362108
oklch(26.9% 0.049 67.4)
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 #11283D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.013
- Dark #1B2431 ΔE 0.025
- Jet #212529 ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.044
- Gunmetal #293241 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.062
- Marine #042E60 ΔE 0.063
Use #11283D 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.