#11233A
Closest named color: Oxford Blue (#1B263B). oklch(25.4% 0.05 255.3), rgb(17, 35, 58).
Aa
White text reads best on this color (15.84:1).
About this color
#11233A is a dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.050 and its hue 255°. 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 15.84:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.32:1 |
| White text | 15.84:1 |
Values
| HEX | #11233A |
| RGB | rgb(17, 35, 58) |
| HSL | hsl(214, 55%, 15%) |
| OKLCH | oklch(25.4% 0.05 255.3) |
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 #11233A | 15.84:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #11233A | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #11233A text on white | 15.84:1 | AAA | Lc 102.7 | Preferred for body text |
| #11233A text on black | 1.32:1 | 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
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A8C3E7
oklch(80.9% 0.059 255.7)
-
Step 400
400
#78A3DB
oklch(70.6% 0.095 255.3)
-
Step 500
500
#558BD1
oklch(63% 0.121 255.5)
-
Step 600
600
#3974BE
oklch(55.6% 0.131 255.3)
-
Step 700
700
#2B61A4
oklch(49.1% 0.122 255.3)
-
Step 800
800
#254F85
oklch(42.6% 0.102 255.8)
-
Step 900
900
#23426B
oklch(37.7% 0.08 256.1)
-
Step 950
950 (this color)
#11233A
oklch(25.4% 0.05 255.3)
#11233A 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) | #19243B | 0.012 |
| Deuteranopia (no green cones) | #14213A | 0.007 |
| Tritanopia (no blue cones) | #00282B | 0.042 |
| Achromatopsia (no color) | #222222 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11233A
#11233A
oklch(25.4% 0.05 255.3)
- #301E03
#301E03
oklch(25.2% 0.049 74)
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 #11233A, 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 0.023
- Rich Black #0D1B2A ΔE 0.039
- Jet #212529 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.056
- Gunmetal #293241 ΔE 0.065
- Navy Blue #001146 ΔE 0.068
- Marine #042E60 ΔE 0.073
Use #11233A 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.