#232B7B
Closest named color: Midnight Blue (#191970). oklch(33.8% 0.134 272.5), rgb(35, 43, 123).
Aa
White text reads best on this color (12.33:1).
About this color
#232B7B is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.134 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.050 away. White text reads best on it, at 12.33:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.70:1 |
| White text | 12.33:1 |
Values
| HEX | #232B7B |
| RGB | rgb(35, 43, 123) |
| HSL | hsl(235, 56%, 31%) |
| OKLCH | oklch(33.8% 0.134 272.5) |
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 #232B7B | 12.33:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #232B7B | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #232B7B text on white | 12.33:1 | AAA | Lc 97.6 | Preferred for body text |
| #232B7B text on black | 1.70:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FE
oklch(93.6% 0.029 273.1)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#ABBDFF
oklch(80.9% 0.096 272.3)
-
Step 400
400
#8198FF
oklch(70.7% 0.153 272.5)
-
Step 500
500
#6479FF
oklch(63% 0.199 272.7)
-
Step 600
600
#4D5CF3
oklch(55.6% 0.224 272.4)
-
Step 700
700
#3F4AD4
oklch(49.1% 0.209 272.4)
-
Step 800
800
#333EAB
oklch(42.7% 0.172 272.3)
-
Step 900
900 (this color)
#232B7B
oklch(33.8% 0.134 272.5)
-
Step 950
950
#19214F
oklch(27% 0.085 272.1)
#232B7B 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) | #00397E | 0.041 |
| Deuteranopia (no green cones) | #003179 | 0.031 |
| Tritanopia (no blue cones) | #003F4E | 0.108 |
| Achromatopsia (no color) | #353535 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #232B7B
#232B7B
oklch(33.8% 0.134 272.5)
- #443600
#443600
oklch(33.8% 0.069 92.7)
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 #232B7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.050
- Marine Blue #01386A ΔE 0.052
- Marine #042E60 ΔE 0.057
- Royal #0C1793 ΔE 0.062
- Twilight Blue #0A437A ΔE 0.065
- Prussian Blue #1D3557 ΔE 0.072
- Cobalt #1E488F ΔE 0.082
- Dark Slate Blue #483D8B ΔE 0.083
Use #232B7B 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.