#234A5D
Closest named color: Dark Grey Blue (#29465B). oklch(38.9% 0.055 231.6), rgb(35, 74, 93).
Aa
White text reads best on this color (9.50:1).
About this color
#234A5D is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.055 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.013 away. White text reads best on it, at 9.50:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.20:1 |
| White text | 9.50:1 |
Values
| HEX | #234A5D |
| RGB | rgb(35, 74, 93) |
| HSL | hsl(200, 45%, 25%) |
| OKLCH | oklch(38.9% 0.055 231.6) |
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 #234A5D | 9.50:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #234A5D | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #234A5D text on white | 9.50:1 | AAA | Lc 91.9 | Preferred for body text |
| #234A5D text on black | 2.20:1 | Fails | Lc -10.5 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2EBF0
oklch(93.5% 0.012 231.7)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A7C6D7
oklch(80.9% 0.041 231.9)
-
Step 400
400
#76A8C3
oklch(70.6% 0.066 232.5)
-
Step 500
500
#5093B3
oklch(63.2% 0.083 230.8)
-
Step 600
600
#317C9F
oklch(55.5% 0.091 232)
-
Step 700
700
#226988
oklch(49.2% 0.084 231.1)
-
Step 800
800
#1F556F
oklch(42.6% 0.071 232.9)
-
Step 900
900 (this color)
#234A5D
oklch(38.9% 0.055 231.6)
-
Step 950
950
#132934
oklch(26.8% 0.035 231.8)
#234A5D 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) | #41495E | 0.038 |
| Deuteranopia (no green cones) | #38435D | 0.032 |
| Tritanopia (no blue cones) | #004F50 | 0.038 |
| Achromatopsia (no color) | #464646 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234A5D
#234A5D
oklch(38.9% 0.055 231.6)
- #5C3C29
#5C3C29
oklch(38.8% 0.054 51.2)
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 #234A5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.013
- Charcoal #264653 ΔE 0.018
- Dark Slate Gray #2F4F4F ΔE 0.035
- Dark Teal #014D4E ΔE 0.038
- Deep Teal #00555A ΔE 0.040
- Dark Blue Grey #1F3B4D ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.052
- Dark Blue Green #005249 ΔE 0.054
Use #234A5D 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.