#12253D
Closest named color: Oxford Blue (#1B263B). oklch(26.2% 0.052 255.1), rgb(18, 37, 61).
Aa
White text reads best on this color (15.46:1).
About this color
#12253D is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.052 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.014 away. White text reads best on it, at 15.46:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.35:1 |
| White text | 15.46:1 |
Values
| HEX | #12253D |
| RGB | rgb(18, 37, 61) |
| HSL | hsl(213, 54%, 15%) |
| OKLCH | oklch(26.2% 0.052 255.1) |
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 #12253D | 15.46:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #12253D | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #12253D text on white | 15.46:1 | AAA | Lc 102.3 | Preferred for body text |
| #12253D 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
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDBF0
oklch(88.6% 0.034 255.2)
-
Step 300
300
#A6C3E8
oklch(80.8% 0.061 254.7)
-
Step 400
400
#76A3DD
oklch(70.6% 0.099 255.1)
-
Step 500
500
#528BD4
oklch(63.1% 0.126 255.4)
-
Step 600
600
#3574C1
oklch(55.6% 0.136 255)
-
Step 700
700
#2761A7
oklch(49.2% 0.127 255.1)
-
Step 800
800
#224F87
oklch(42.6% 0.106 255.4)
-
Step 900
900
#21426C
oklch(37.6% 0.082 255.4)
-
Step 950
950 (this color)
#12253D
oklch(26.2% 0.052 255.1)
#12253D 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) | #1B273E | 0.015 |
| Deuteranopia (no green cones) | #15223D | 0.010 |
| Tritanopia (no blue cones) | #002A2E | 0.042 |
| Achromatopsia (no color) | #242424 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12253D
#12253D
oklch(26.2% 0.052 255.1)
- #332003
#332003
oklch(26.2% 0.051 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 #12253D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.014
- Dark #1B2431 ΔE 0.024
- Jet #212529 ΔE 0.042
- Rich Black #0D1B2A ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.049
- Gunmetal #293241 ΔE 0.058
- Marine #042E60 ΔE 0.066
- Prussian Blue #1D3557 ΔE 0.068
Use #12253D 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.