#0C223B
Closest named color: Oxford Blue (#1B263B). oklch(24.9% 0.055 253.4), rgb(12, 34, 59).
Aa
White text reads best on this color (16.05:1).
About this color
#0C223B is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.055 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.025 away. White text reads best on it, at 16.05:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.05:1 |
Values
| HEX | #0C223B |
| RGB | rgb(12, 34, 59) |
| HSL | hsl(212, 66%, 14%) |
| OKLCH | oklch(24.9% 0.055 253.4) |
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 #0C223B | 16.05:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #0C223B | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #0C223B text on white | 16.05:1 | AAA | Lc 102.9 | Preferred for body text |
| #0C223B text on black | 1.30:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A3C4EB
oklch(81% 0.066 252.8)
-
Step 400
400
#71A4E1
oklch(70.7% 0.105 253.6)
-
Step 500
500
#498CD8
oklch(63.1% 0.134 253.2)
-
Step 600
600
#2974C6
oklch(55.6% 0.147 253.7)
-
Step 700
700
#1B61AB
oklch(49.1% 0.136 253.6)
-
Step 800
800
#19508A
oklch(42.8% 0.112 253)
-
Step 900
900
#1C436E
oklch(37.8% 0.086 253)
-
Step 950
950 (this color)
#0C223B
oklch(24.9% 0.055 253.4)
#0C223B 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) | #17243C | 0.016 |
| Deuteranopia (no green cones) | #101F3A | 0.010 |
| Tritanopia (no blue cones) | #00282B | 0.044 |
| Achromatopsia (no color) | #212121 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C223B
#0C223B
oklch(24.9% 0.055 253.4)
- #301D00
#301D00
oklch(24.9% 0.053 74.6)
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 #0C223B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.025
- Dark #1B2431 ΔE 0.029
- Rich Black #0D1B2A ΔE 0.037
- Jet #212529 ΔE 0.048
- Navy Blue #001146 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.062
- Gunmetal #293241 ΔE 0.071
- Marine #042E60 ΔE 0.073
Use #0C223B 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.