#11273B
Closest named color: Oxford Blue (#1B263B). oklch(26.5% 0.047 247.9), rgb(17, 39, 59).
Aa
White text reads best on this color (15.24:1).
About this color
#11273B is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.047 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 15.24:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.37:1 |
| White text | 15.24:1 |
Values
| HEX | #11273B |
| RGB | rgb(17, 39, 59) |
| HSL | hsl(209, 55%, 15%) |
| OKLCH | oklch(26.5% 0.047 247.9) |
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 #11273B | 15.24:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #11273B | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #11273B text on white | 15.24:1 | AAA | Lc 102.0 | Preferred for body text |
| #11273B text on black | 1.37:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADBED
oklch(88.4% 0.031 249.7)
-
Step 300
300
#A5C5E3
oklch(81% 0.055 246.8)
-
Step 400
400
#73A6D6
oklch(70.8% 0.089 247.7)
-
Step 500
500
#4C8FCB
oklch(63.2% 0.114 247.7)
-
Step 600
600
#2C78B8
oklch(55.7% 0.124 247.9)
-
Step 700
700
#1E649E
oklch(49% 0.115 248.2)
-
Step 800
800
#1B5280
oklch(42.7% 0.095 247.8)
-
Step 900
900
#1D4467
oklch(37.6% 0.075 248.2)
-
Step 950
950 (this color)
#11273B
oklch(26.5% 0.047 247.9)
#11273B 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) | #1E283C | 0.018 |
| Deuteranopia (no green cones) | #19243B | 0.013 |
| Tritanopia (no blue cones) | #002C2E | 0.038 |
| Achromatopsia (no color) | #252525 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11273B
#11273B
oklch(26.5% 0.047 247.9)
- #342109
#342109
oklch(26.6% 0.047 69.5)
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 #11273B, 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 0.021
- Jet #212529 ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.047
- Rich Black #0D1B2A ΔE 0.049
- Gunmetal #293241 ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.066
- Marine #042E60 ΔE 0.067
Use #11273B 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.