#234F79
Closest named color: Light Navy (#155084). oklch(41.8% 0.086 249.7), rgb(35, 79, 121).
Aa
White text reads best on this color (8.51:1).
About this color
#234F79 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.086 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.020 away. White text reads best on it, at 8.51:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.46:1 |
| White text | 8.51:1 |
Values
| HEX | #234F79 |
| RGB | rgb(35, 79, 121) |
| HSL | hsl(209, 55%, 31%) |
| OKLCH | oklch(41.8% 0.086 249.7) |
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 #234F79 | 8.51:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #234F79 | 2.46:1 | Fails | Lc 14.9 | Not readable |
| #234F79 text on white | 8.51:1 | AAA | Lc 89.1 | Fine for body text |
| #234F79 text on black | 2.46:1 | Fails | Lc -13.1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#A9C4E0
oklch(80.9% 0.049 249.4)
-
Step 400
400
#7AA5D1
oklch(70.7% 0.08 249.6)
-
Step 500
500
#568EC5
oklch(63.1% 0.102 249.3)
-
Step 600
600
#3A77B2
oklch(55.6% 0.112 249.8)
-
Step 700
700
#2C6499
oklch(49.2% 0.104 249.7)
-
Step 800
800 (this color)
#234F79
oklch(41.8% 0.086 249.7)
-
Step 900
900
#244464
oklch(37.8% 0.067 250)
-
Step 950
950
#15283A
oklch(27% 0.042 248.4)
#234F79 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) | #3C517B | 0.029 |
| Deuteranopia (no green cones) | #304978 | 0.020 |
| Tritanopia (no blue cones) | #00595E | 0.066 |
| Achromatopsia (no color) | #4D4D4D | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234F79
#234F79
oklch(41.8% 0.086 249.7)
- #6A430A
#6A430A
oklch(41.9% 0.086 69.8)
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 #234F79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.020
- Deep Sea Blue #015482 ΔE 0.023
- Dusk Blue #26538D ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.041
- Twilight Blue #0A437A ΔE 0.044
- Cobalt #1E488F ΔE 0.046
- YInMn Blue #415A77 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.052
Use #234F79 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.