#233259
Closest named color: Prussian Blue (#1D3557). oklch(32.5% 0.072 266.6), rgb(35, 50, 89).
Aa
White text reads best on this color (12.56:1).
About this color
#233259 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.072 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.012 away. White text reads best on it, at 12.56:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.67:1 |
| White text | 12.56:1 |
Values
| HEX | #233259 |
| RGB | rgb(35, 50, 89) |
| HSL | hsl(223, 44%, 24%) |
| OKLCH | oklch(32.5% 0.072 266.6) |
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 #233259 | 12.56:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #233259 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #233259 text on white | 12.56:1 | AAA | Lc 98.4 | Preferred for body text |
| #233259 text on black | 1.67:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EE
oklch(88.5% 0.031 267.2)
-
Step 300
300
#B1C0E5
oklch(80.9% 0.055 267.8)
-
Step 400
400
#889FD7
oklch(70.6% 0.086 267)
-
Step 500
500
#6B87CD
oklch(63.2% 0.111 266.7)
-
Step 600
600
#536FBA
oklch(55.5% 0.121 267)
-
Step 700
700
#435DA0
oklch(49.1% 0.112 266.4)
-
Step 800
800
#374C82
oklch(42.7% 0.094 266.5)
-
Step 900
900 (this color)
#233259
oklch(32.5% 0.072 266.6)
-
Step 950
950
#1C263D
oklch(27.1% 0.045 265.6)
#233259 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) | #22365B | 0.012 |
| Deuteranopia (no green cones) | #1B3158 | 0.011 |
| Tritanopia (no blue cones) | #033B41 | 0.065 |
| Achromatopsia (no color) | #333333 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #233259
#233259
oklch(32.5% 0.072 266.6)
- #433100
#433100
oklch(32.5% 0.066 86.2)
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 #233259, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.012
- Marine #042E60 ΔE 0.036
- Marine Blue #01386A ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.042
- Gunmetal #293241 ΔE 0.044
- Midnight Green #073B4C ΔE 0.048
- Onyx #343A40 ΔE 0.063
Use #233259 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.