#232F4E
Closest named color: Prussian Blue (#1D3557). oklch(31% 0.058 267), rgb(35, 47, 78).
Aa
White text reads best on this color (13.22:1).
About this color
#232F4E is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.058 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.022 away. White text reads best on it, at 13.22:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.58:1 |
| White text | 13.22:1 |
Values
| HEX | #232F4E |
| RGB | rgb(35, 47, 78) |
| HSL | hsl(223, 38%, 22%) |
| OKLCH | oklch(31% 0.058 267) |
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 #232F4E | 13.22:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #232F4E | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #232F4E text on white | 13.22:1 | AAA | Lc 99.5 | Preferred for body text |
| #232F4E text on black | 1.58:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F3
oklch(88.5% 0.038 267.3)
-
Step 300
300
#ACC0EE
oklch(80.9% 0.069 266.5)
-
Step 400
400
#819EE6
oklch(70.6% 0.111 266.8)
-
Step 500
500
#6384DF
oklch(63.1% 0.142 267.3)
-
Step 600
600
#4B6CCC
oklch(55.6% 0.153 267.1)
-
Step 700
700
#3C5AB1
oklch(49.2% 0.143 266.8)
-
Step 800
800
#324A8F
oklch(42.8% 0.118 267)
-
Step 900
900
#2B3E72
oklch(37.6% 0.092 266.9)
-
Step 950
950 (this color)
#232F4E
oklch(31% 0.058 267)
#232F4E 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) | #23324F | 0.010 |
| Deuteranopia (no green cones) | #1E2E4D | 0.008 |
| Tritanopia (no blue cones) | #10363A | 0.054 |
| Achromatopsia (no color) | #303030 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #232F4E
#232F4E
oklch(31% 0.058 267)
- #3D2E06
#3D2E06
oklch(31% 0.058 86.9)
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 #232F4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.022
- Space Cadet #2B2D42 ΔE 0.024
- Gunmetal #293241 ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.040
- Marine #042E60 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.044
- Midnight Green #073B4C ΔE 0.045
- Marine Blue #01386A ΔE 0.056
Use #232F4E 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.