#12235B
Closest named color: Marine (#042E60). oklch(28.1% 0.103 266.7), rgb(18, 35, 91).
Aa
White text reads best on this color (14.81:1).
About this color
#12235B is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.103 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.032 away. White text reads best on it, at 14.81:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.41:1 |
| White text | 14.81:1 |
Values
| HEX | #12235B |
| RGB | rgb(18, 35, 91) |
| HSL | hsl(226, 67%, 21%) |
| OKLCH | oklch(28.1% 0.103 266.7) |
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 #12235B | 14.81:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #12235B | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #12235B text on white | 14.81:1 | AAA | Lc 101.3 | Preferred for body text |
| #12235B text on black | 1.41:1 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#759BFF
oklch(70.6% 0.153 266.8)
-
Step 500
500
#537EFF
oklch(63.1% 0.197 266.8)
-
Step 600
600
#345CFF
oklch(55.5% 0.245 266.9)
-
Step 700
700
#2443EC
oklch(49.2% 0.252 266.8)
-
Step 800
800
#1D39BE
oklch(42.6% 0.208 266.7)
-
Step 900
900
#1B3496
oklch(37.7% 0.163 266.8)
-
Step 950
950 (this color)
#12235B
oklch(28.1% 0.103 266.7)
#12235B 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) | #002B5D | 0.024 |
| Deuteranopia (no green cones) | #00245A | 0.016 |
| Tritanopia (no blue cones) | #00313B | 0.081 |
| Achromatopsia (no color) | #282828 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12235B
#12235B
oklch(28.1% 0.103 266.7)
- #352700
#352700
oklch(28.1% 0.058 87.9)
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 #12235B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.032
- Midnight Blue #191970 ΔE 0.043
- Dark Indigo #1F0954 ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.060
- Oxford Blue #1B263B ΔE 0.062
- Marine Blue #01386A ΔE 0.064
- Darkblue #030764 ΔE 0.065
- Dark Royal Blue #02066F ΔE 0.068
Use #12235B 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.