#234F72
Closest named color: Deep Sea Blue (#015482). oklch(41.4% 0.076 245.2), rgb(35, 79, 114).
Aa
White text reads best on this color (8.63:1).
About this color
#234F72 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.076 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.030 away. White text reads best on it, at 8.63:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.43:1 |
| White text | 8.63:1 |
Values
| HEX | #234F72 |
| RGB | rgb(35, 79, 114) |
| HSL | hsl(207, 53%, 29%) |
| OKLCH | oklch(41.4% 0.076 245.2) |
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 #234F72 | 8.63:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #234F72 | 2.43:1 | Fails | Lc 14.6 | Not readable |
| #234F72 text on white | 8.63:1 | AAA | Lc 89.4 | Fine for body text |
| #234F72 text on black | 2.43:1 | Fails | Lc -12.8 | 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 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300
#A9C4DC
oklch(80.8% 0.045 245.2)
-
Step 400
400
#7BA6CB
oklch(70.8% 0.072 245)
-
Step 500
500
#588FBD
oklch(63.1% 0.091 245.2)
-
Step 600
600
#3C79A9
oklch(55.7% 0.098 244.7)
-
Step 700
700
#2D6591
oklch(49% 0.092 245.1)
-
Step 800
800 (this color)
#234F72
oklch(41.4% 0.076 245.2)
-
Step 900
900
#24455F
oklch(37.8% 0.059 244.1)
-
Step 950
950
#162838
oklch(26.9% 0.038 246.6)
#234F72 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) | #3F5074 | 0.033 |
| Deuteranopia (no green cones) | #354871 | 0.026 |
| Tritanopia (no blue cones) | #00575B | 0.056 |
| Achromatopsia (no color) | #4C4C4C | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234F72
#234F72
oklch(41.4% 0.076 245.2)
- #674218
#674218
oklch(41.3% 0.076 66)
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 #234F72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.030
- Light Navy #155084 ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.042
- Dusk Blue #26538D ΔE 0.045
- Twilight Blue #0A437A ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.048
- YInMn Blue #415A77 ΔE 0.051
- Charcoal #264653 ΔE 0.054
Use #234F72 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.