#002243
Closest named color: Oxford Blue (#1B263B). oklch(25% 0.073 251.3), rgb(0, 34, 67).
Aa
White text reads best on this color (16.03:1).
About this color
#002243 is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.073 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.038 away. White text reads best on it, at 16.03:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.03:1 |
Values
| HEX | #002243 |
| RGB | rgb(0, 34, 67) |
| HSL | hsl(210, 100%, 13%) |
| OKLCH | oklch(25% 0.073 251.3) |
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 #002243 | 16.03:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #002243 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #002243 text on white | 16.03:1 | AAA | Lc 102.7 | Preferred for body text |
| #002243 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEEBFB
oklch(93.5% 0.026 253.6)
-
Step 200
200
#C2DCF9
oklch(88.5% 0.049 251.2)
-
Step 300
300
#97C5F7
oklch(80.9% 0.086 251)
-
Step 400
400
#59A5F4
oklch(70.8% 0.139 251.2)
-
Step 500
500
#168BF0
oklch(63% 0.178 251.5)
-
Step 600
600
#0075CE
oklch(55.7% 0.162 251.1)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#00427A
oklch(37.7% 0.112 251.7)
-
Step 950
950 (this color)
#002243
oklch(25% 0.073 251.3)
#002243 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) | #102544 | 0.020 |
| Deuteranopia (no green cones) | #031F42 | 0.010 |
| Tritanopia (no blue cones) | #002A2F | 0.053 |
| Achromatopsia (no color) | #212121 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #002243
#002243
oklch(25% 0.073 251.3)
- #311C00
#311C00
oklch(24.8% 0.054 70.9)
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 #002243, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.038
- Dark #1B2431 ΔE 0.046
- Rich Black #0D1B2A ΔE 0.050
- Navy Blue #001146 ΔE 0.052
- Marine #042E60 ΔE 0.063
- Jet #212529 ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.070
- Dark Indigo #1F0954 ΔE 0.075
Use #002243 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.