#12367D
Closest named color: Marine Blue (#01386A). oklch(35.5% 0.128 262), rgb(18, 54, 125).
Aa
White text reads best on this color (11.35:1).
About this color
#12367D is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.128 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.036 away. White text reads best on it, at 11.35:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.84:1 |
| White text | 11.35:1 |
Values
| HEX | #12367D |
| RGB | rgb(18, 54, 125) |
| HSL | hsl(220, 75%, 28%) |
| OKLCH | oklch(35.5% 0.128 262) |
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 #12367D | 11.35:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #12367D | 1.84:1 | Fails | Lc 8.2 | Not readable |
| #12367D text on white | 11.35:1 | AAA | Lc 95.7 | Preferred for body text |
| #12367D text on black | 1.84:1 | 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 900.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C6DAFD
oklch(88.5% 0.053 261.7)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6B9EFF
oklch(70.7% 0.153 262.2)
-
Step 500
500
#4382FE
oklch(63.1% 0.196 262.1)
-
Step 600
600
#2467ED
oklch(55.5% 0.213 262.1)
-
Step 700
700
#1755CE
oklch(49.1% 0.197 262)
-
Step 800
800
#1646A7
oklch(42.7% 0.165 262.2)
-
Step 900
900 (this color)
#12367D
oklch(35.5% 0.128 262)
-
Step 950
950
#0F244D
oklch(27% 0.081 262.1)
#12367D 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) | #003F7F | 0.025 |
| Deuteranopia (no green cones) | #00357C | 0.012 |
| Tritanopia (no blue cones) | #004854 | 0.099 |
| Achromatopsia (no color) | #3A3A3A | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12367D
#12367D
oklch(35.5% 0.128 262)
- #4F3700
#4F3700
oklch(35.5% 0.073 81.3)
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 #12367D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.036
- Twilight Blue #0A437A ΔE 0.038
- Marine #042E60 ΔE 0.057
- Cobalt #1E488F ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.066
- Midnight Blue #191970 ΔE 0.073
- Royal #0C1793 ΔE 0.073
- Light Navy #155084 ΔE 0.076
Use #12367D 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.