#232E55
Closest named color: Prussian Blue (#1D3557). oklch(31.3% 0.071 270), rgb(35, 46, 85).
Aa
White text reads best on this color (13.17:1).
About this color
#232E55 is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.071 and its hue 270°. 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 13.17:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.59:1 |
| White text | 13.17:1 |
Values
| HEX | #232E55 |
| RGB | rgb(35, 46, 85) |
| HSL | hsl(227, 42%, 24%) |
| OKLCH | oklch(31.3% 0.071 270) |
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 #232E55 | 13.17:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #232E55 | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #232E55 text on white | 13.17:1 | AAA | Lc 99.4 | Preferred for body text |
| #232E55 text on black | 1.59:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CDD8F9
oklch(88.4% 0.047 270.8)
-
Step 300
300
#ABBFF8
oklch(81% 0.084 269.5)
-
Step 400
400
#809BF5
oklch(70.7% 0.135 270)
-
Step 500
500
#627FF1
oklch(63.1% 0.173 270.1)
-
Step 600
600
#4B65DF
oklch(55.6% 0.188 270.1)
-
Step 700
700
#3C53C2
oklch(49.1% 0.175 269.9)
-
Step 800
800
#32459D
oklch(42.8% 0.145 270)
-
Step 900
900
#2B3B7D
oklch(37.7% 0.113 270)
-
Step 950
950 (this color)
#232E55
oklch(31.3% 0.071 270)
#232E55 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) | #1E3257 | 0.013 |
| Deuteranopia (no green cones) | #182E54 | 0.015 |
| Tritanopia (no blue cones) | #09363D | 0.063 |
| Achromatopsia (no color) | #303030 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #232E55
#232E55
oklch(31.3% 0.071 270)
- #3E2F00
#3E2F00
oklch(31.3% 0.064 89.4)
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 #232E55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.022
- Marine #042E60 ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.036
- Gunmetal #293241 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.048
- Marine Blue #01386A ΔE 0.048
- Oxford Blue #1B263B ΔE 0.053
- Midnight Green #073B4C ΔE 0.053
Use #232E55 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.