#234183
Closest named color: Twilight Blue (#0A437A). oklch(39.1% 0.117 263.5), rgb(35, 65, 131).
Aa
White text reads best on this color (9.74:1).
About this color
#234183 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.117 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.025 away. White text reads best on it, at 9.74:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.15:1 |
| White text | 9.74:1 |
Values
| HEX | #234183 |
| RGB | rgb(35, 65, 131) |
| HSL | hsl(221, 58%, 33%) |
| OKLCH | oklch(39.1% 0.117 263.5) |
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 #234183 | 9.74:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #234183 | 2.15:1 | Fails | Lc 11.7 | Not readable |
| #234183 text on white | 9.74:1 | AAA | Lc 92.3 | Preferred for body text |
| #234183 text on black | 2.15:1 | Fails | Lc -10.2 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAFA
oklch(88.6% 0.048 263.1)
-
Step 300
300
#A3C1FA
oklch(80.9% 0.087 263)
-
Step 400
400
#729EF8
oklch(70.7% 0.141 263.5)
-
Step 500
500
#4F83F4
oklch(63.1% 0.178 263.5)
-
Step 600
600
#3469E3
oklch(55.6% 0.194 263.6)
-
Step 700
700
#2756C5
oklch(49% 0.181 263.7)
-
Step 800
800
#2147A0
oklch(42.6% 0.151 263.7)
-
Step 900
900 (this color)
#234183
oklch(39.1% 0.117 263.5)
-
Step 950
950
#13244A
oklch(26.9% 0.074 264)
#234183 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) | #1C4985 | 0.022 |
| Deuteranopia (no green cones) | #004082 | 0.024 |
| Tritanopia (no blue cones) | #00515B | 0.095 |
| Achromatopsia (no color) | #444444 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234183
#234183
oklch(39.1% 0.117 263.5)
- #5A4100
#5A4100
oklch(39.2% 0.081 83.7)
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 #234183, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.025
- Cobalt #1E488F ΔE 0.026
- Light Navy #155084 ΔE 0.043
- Dark Slate Blue #483D8B ΔE 0.053
- Dusk Blue #26538D ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.056
- Blueberry #464196 ΔE 0.057
- Marine Blue #01386A ΔE 0.058
Use #234183 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.