#11243F
Closest named color: Oxford Blue (#1B263B). oklch(26% 0.057 257.4), rgb(17, 36, 63).
Aa
White text reads best on this color (15.57:1).
About this color
#11243F is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.057 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.018 away. White text reads best on it, at 15.57:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.34:1 |
| White text | 15.57:1 |
Values
| HEX | #11243F |
| RGB | rgb(17, 36, 63) |
| HSL | hsl(215, 58%, 16%) |
| OKLCH | oklch(26% 0.057 257.4) |
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 #11243F | 15.57:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #11243F | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #11243F text on white | 15.57:1 | AAA | Lc 102.4 | Preferred for body text |
| #11243F text on black | 1.34:1 | 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
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF2
oklch(88.6% 0.037 256)
-
Step 300
300
#A6C3EC
oklch(81% 0.066 257)
-
Step 400
400
#75A2E3
oklch(70.6% 0.108 257.5)
-
Step 500
500
#508ADB
oklch(63.1% 0.137 257.1)
-
Step 600
600
#3372C9
oklch(55.6% 0.15 257.3)
-
Step 700
700
#265FAE
oklch(49.1% 0.139 257.5)
-
Step 800
800
#214E8D
oklch(42.8% 0.116 257.5)
-
Step 900
900
#204170
oklch(37.6% 0.09 257.5)
-
Step 950
950 (this color)
#11243F
oklch(26% 0.057 257.4)
#11243F 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) | #182640 | 0.012 |
| Deuteranopia (no green cones) | #12223E | 0.007 |
| Tritanopia (no blue cones) | #002A2E | 0.046 |
| Achromatopsia (no color) | #242424 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11243F
#11243F
oklch(26% 0.057 257.4)
- #322000
#322000
oklch(26% 0.054 78.1)
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 #11243F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.018
- Dark #1B2431 ΔE 0.029
- Rich Black #0D1B2A ΔE 0.047
- Jet #212529 ΔE 0.048
- Space Cadet #2B2D42 ΔE 0.052
- Gunmetal #293241 ΔE 0.062
- Marine #042E60 ΔE 0.063
- Navy Blue #001146 ΔE 0.067
Use #11243F 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.