#12253C
Closest named color: Oxford Blue (#1B263B). oklch(26.1% 0.05 254.2), rgb(18, 37, 60).
Aa
White text reads best on this color (15.49:1).
About this color
#12253C is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.050 and its hue 254°. 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 15.49:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.35:1 |
| White text | 15.49:1 |
Values
| HEX | #12253C |
| RGB | rgb(18, 37, 60) |
| HSL | hsl(213, 54%, 15%) |
| OKLCH | oklch(26.1% 0.05 254.2) |
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 #12253C | 15.49:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #12253C | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #12253C text on white | 15.49:1 | AAA | Lc 102.3 | Preferred for body text |
| #12253C text on black | 1.35:1 | 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
#A7C3E7
oklch(80.9% 0.06 254.8)
-
Step 400
400
#77A4DB
oklch(70.8% 0.095 253.9)
-
Step 500
500
#528CD1
oklch(63.1% 0.121 253.8)
-
Step 600
600
#3575BE
oklch(55.7% 0.131 253.7)
-
Step 700
700
#2861A4
oklch(49% 0.123 254.5)
-
Step 800
800
#225085
oklch(42.7% 0.102 253.9)
-
Step 900
900
#21436B
oklch(37.8% 0.08 253.9)
-
Step 950
950 (this color)
#12253C
oklch(26.1% 0.05 254.2)
#12253C 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) | #1B263D | 0.013 |
| Deuteranopia (no green cones) | #16223C | 0.011 |
| Tritanopia (no blue cones) | #002A2D | 0.042 |
| Achromatopsia (no color) | #242424 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12253C
#12253C
oklch(26.1% 0.05 254.2)
- #322004
#322004
oklch(26% 0.05 74.7)
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 #12253C, 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 0.023
- Jet #212529 ΔE 0.041
- Rich Black #0D1B2A ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.049
- Gunmetal #293241 ΔE 0.058
- Marine #042E60 ΔE 0.067
- Prussian Blue #1D3557 ΔE 0.069
Use #12253C 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.