#234678
Closest named color: Twilight Blue (#0A437A). oklch(39.5% 0.094 257.6), rgb(35, 70, 120).
Aa
White text reads best on this color (9.46:1).
About this color
#234678 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.094 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.022 away. White text reads best on it, at 9.46:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.21:1 |
| White text | 9.46:1 |
Values
| HEX | #234678 |
| RGB | rgb(35, 70, 120) |
| HSL | hsl(215, 55%, 30%) |
| OKLCH | oklch(39.5% 0.094 257.6) |
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 #234678 | 9.46:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #234678 | 2.21:1 | Fails | Lc 12.3 | Not readable |
| #234678 text on white | 9.46:1 | AAA | Lc 91.6 | Preferred for body text |
| #234678 text on black | 2.21:1 | Fails | Lc -10.7 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF8
oklch(93.7% 0.02 257.5)
-
Step 200
200
#C9DBF4
oklch(88.6% 0.04 256.6)
-
Step 300
300
#A4C3EF
oklch(81% 0.071 257.1)
-
Step 400
400
#73A2E7
oklch(70.7% 0.114 257.9)
-
Step 500
500
#4D89DF
oklch(63% 0.145 257.6)
-
Step 600
600
#2F71CD
oklch(55.5% 0.157 257.6)
-
Step 700
700
#225EB1
oklch(49% 0.146 257.6)
-
Step 800
800
#1E4D90
oklch(42.6% 0.122 257.9)
-
Step 900
900 (this color)
#234678
oklch(39.5% 0.094 257.6)
-
Step 950
950
#122643
oklch(26.9% 0.06 257.7)
#234678 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) | #2F4A7A | 0.019 |
| Deuteranopia (no green cones) | #224277 | 0.012 |
| Tritanopia (no blue cones) | #005259 | 0.076 |
| Achromatopsia (no color) | #464646 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234678
#234678
oklch(39.5% 0.094 257.6)
- #5E4000
#5E4000
oklch(39.5% 0.082 78.6)
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 #234678, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.022
- Light Navy #155084 ΔE 0.032
- Cobalt #1E488F ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.042
- Dusk Blue #26538D ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Marine Blue #01386A ΔE 0.057
- Charcoal #264653 ΔE 0.064
Use #234678 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.