#234A78
Closest named color: Light Navy (#155084). oklch(40.5% 0.09 254.1), rgb(35, 74, 120).
Aa
White text reads best on this color (9.04:1).
About this color
#234A78 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.090 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.024 away. White text reads best on it, at 9.04:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.32:1 |
| White text | 9.04:1 |
Values
| HEX | #234A78 |
| RGB | rgb(35, 74, 120) |
| HSL | hsl(212, 55%, 30%) |
| OKLCH | oklch(40.5% 0.09 254.1) |
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 #234A78 | 9.04:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #234A78 | 2.32:1 | Fails | Lc 13.4 | Not readable |
| #234A78 text on white | 9.04:1 | AAA | Lc 90.5 | Preferred for body text |
| #234A78 text on black | 2.32:1 | Fails | Lc -11.8 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBED
oklch(88.6% 0.03 253)
-
Step 300
300
#AAC3E2
oklch(80.9% 0.052 253.9)
-
Step 400
400
#7CA4D4
oklch(70.8% 0.083 253.4)
-
Step 500
500
#5A8CC9
oklch(63.1% 0.107 254.1)
-
Step 600
600
#3F75B6
oklch(55.6% 0.117 254.3)
-
Step 700
700
#31629C
oklch(49.1% 0.108 254.1)
-
Step 800
800 (this color)
#234A78
oklch(40.5% 0.09 254.1)
-
Step 900
900
#264366
oklch(37.8% 0.07 254.1)
-
Step 950
950
#17273C
oklch(27% 0.045 255.6)
#234A78 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) | #354D7A | 0.023 |
| Deuteranopia (no green cones) | #294577 | 0.015 |
| Tritanopia (no blue cones) | #00555B | 0.071 |
| Achromatopsia (no color) | #494949 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234A78
#234A78
oklch(40.5% 0.09 254.1)
- #644100
#644100
oklch(40.6% 0.086 74.5)
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 #234A78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.024
- Twilight Blue #0A437A ΔE 0.030
- Deep Sea Blue #015482 ΔE 0.033
- Cobalt #1E488F ΔE 0.040
- Dusk Blue #26538D ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.054
- Charcoal #264653 ΔE 0.062
Use #234A78 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.