#233863
Closest named color: Prussian Blue (#1D3557). oklch(34.7% 0.08 263.2), rgb(35, 56, 99).
Aa
White text reads best on this color (11.55:1).
About this color
#233863 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.080 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.024 away. White text reads best on it, at 11.55:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.81:1 |
| White text | 11.55:1 |
Values
| HEX | #233863 |
| RGB | rgb(35, 56, 99) |
| HSL | hsl(220, 48%, 26%) |
| OKLCH | oklch(34.7% 0.08 263.2) |
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 #233863 | 11.55:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #233863 | 1.81:1 | Fails | Lc 7.5 | Not readable |
| #233863 text on white | 11.55:1 | AAA | Lc 96.4 | Preferred for body text |
| #233863 text on black | 1.81:1 | 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
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CEDAF0
oklch(88.6% 0.033 262.7)
-
Step 300
300
#ADC1E8
oklch(80.9% 0.06 263.7)
-
Step 400
400
#81A0DD
oklch(70.6% 0.096 263.4)
-
Step 500
500
#6288D4
oklch(63.2% 0.123 263.2)
-
Step 600
600
#4970C1
oklch(55.6% 0.134 263.3)
-
Step 700
700
#3A5DA6
oklch(49% 0.124 263.3)
-
Step 800
800
#304D87
oklch(42.8% 0.103 262.8)
-
Step 900
900 (this color)
#233863
oklch(34.7% 0.08 263.2)
-
Step 950
950
#19263F
oklch(27% 0.05 262.6)
#233863 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) | #253C65 | 0.013 |
| Deuteranopia (no green cones) | #1C3662 | 0.011 |
| Tritanopia (no blue cones) | #004248 | 0.070 |
| Achromatopsia (no color) | #393939 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #233863
#233863
oklch(34.7% 0.08 263.2)
- #4B3600
#4B3600
oklch(34.7% 0.071 84.3)
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 #233863, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.024
- Marine Blue #01386A ΔE 0.028
- Dark Blue Grey #1F3B4D ΔE 0.043
- Marine #042E60 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.051
- Midnight Green #073B4C ΔE 0.052
- Gunmetal #293241 ΔE 0.059
Use #233863 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.