#13233C
Closest named color: Oxford Blue (#1B263B). oklch(25.6% 0.052 259), rgb(19, 35, 60).
Aa
White text reads best on this color (15.74:1).
About this color
#13233C is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.052 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.017 away. White text reads best on it, at 15.74:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.33:1 |
| White text | 15.74:1 |
Values
| HEX | #13233C |
| RGB | rgb(19, 35, 60) |
| HSL | hsl(217, 52%, 15%) |
| OKLCH | oklch(25.6% 0.052 259) |
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 #13233C | 15.74:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #13233C | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #13233C text on white | 15.74:1 | AAA | Lc 102.6 | Preferred for body text |
| #13233C text on black | 1.33:1 | 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
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#A9C2E9
oklch(80.9% 0.062 259.2)
-
Step 400
400
#7BA2DE
oklch(70.7% 0.098 258.8)
-
Step 500
500
#5989D5
oklch(63% 0.127 259.2)
-
Step 600
600
#3E72C2
oklch(55.6% 0.137 258.8)
-
Step 700
700
#305FA8
oklch(49.1% 0.128 259)
-
Step 800
800
#294E88
oklch(42.7% 0.106 259.1)
-
Step 900
900
#25416D
oklch(37.6% 0.083 259.1)
-
Step 950
950 (this color)
#13233C
oklch(25.6% 0.052 259)
#13233C 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) | #19253D | 0.012 |
| Deuteranopia (no green cones) | #13213B | 0.007 |
| Tritanopia (no blue cones) | #00292C | 0.046 |
| Achromatopsia (no color) | #232323 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #13233C
#13233C
oklch(25.6% 0.052 259)
- #302001
#302001
oklch(25.7% 0.052 80.6)
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 #13233C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.017
- Dark #1B2431 ΔE 0.024
- Rich Black #0D1B2A ΔE 0.042
- Jet #212529 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.053
- Gunmetal #293241 ΔE 0.063
- Navy Blue #001146 ΔE 0.068
- Marine #042E60 ΔE 0.069
Use #13233C 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.