#06233A
Closest named color: Oxford Blue (#1B263B). oklch(24.8% 0.055 246.5), rgb(6, 35, 58).
Aa
White text reads best on this color (16.03:1).
About this color
#06233A is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.055 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.028 away. White text reads best on it, at 16.03:1.
| 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 | 16.03:1 |
Values
| HEX | #06233A |
| RGB | rgb(6, 35, 58) |
| HSL | hsl(207, 81%, 13%) |
| OKLCH | oklch(24.8% 0.055 246.5) |
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 #06233A | 16.03:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #06233A | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #06233A text on white | 16.03:1 | AAA | Lc 102.8 | Preferred for body text |
| #06233A 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
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C6DCF0
oklch(88.4% 0.036 245.7)
-
Step 300
300
#9EC5E9
oklch(80.8% 0.066 246.6)
-
Step 400
400
#67A7DE
oklch(70.7% 0.104 245.9)
-
Step 500
500
#378FD5
oklch(63% 0.134 246.4)
-
Step 600
600
#0078C2
oklch(55.6% 0.145 246.5)
-
Step 700
700
#0065A4
oklch(49.2% 0.127 246.3)
-
Step 800
800
#005287
oklch(42.6% 0.111 246.5)
-
Step 900
900
#0F456D
oklch(37.8% 0.087 246.1)
-
Step 950
950 (this color)
#06233A
oklch(24.8% 0.055 246.5)
#06233A 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) | #18243B | 0.021 |
| Deuteranopia (no green cones) | #111F3A | 0.016 |
| Tritanopia (no blue cones) | #00292B | 0.041 |
| Achromatopsia (no color) | #212121 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #06233A
#06233A
oklch(24.8% 0.055 246.5)
- #321B00
#321B00
oklch(24.8% 0.055 67.3)
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 #06233A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.028
- Dark #1B2431 ΔE 0.030
- Rich Black #0D1B2A ΔE 0.037
- Jet #212529 ΔE 0.048
- Navy Blue #001146 ΔE 0.064
- Space Cadet #2B2D42 ΔE 0.065
- Gunmetal #293241 ΔE 0.073
- Marine #042E60 ΔE 0.074
Use #06233A 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.