#234AA6
Closest named color: Cobalt (#1E488F). oklch(43.8% 0.155 263.8), rgb(35, 74, 166).
Aa
White text reads best on this color (8.07:1).
About this color
#234AA6 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.155 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.038 away. White text reads best on it, at 8.07:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.60:1 |
| White text | 8.07:1 |
Values
| HEX | #234AA6 |
| RGB | rgb(35, 74, 166) |
| HSL | hsl(222, 65%, 39%) |
| OKLCH | oklch(43.8% 0.155 263.8) |
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 #234AA6 | 8.07:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #234AA6 | 2.60:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #234AA6 text on white | 8.07:1 | AAA | Lc 87.4 | Fine for body text |
| #234AA6 text on black | 2.60:1 | Fails | Lc -14.7 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A3C1FC
oklch(81% 0.09 263.6)
-
Step 400
400
#719EFB
oklch(70.8% 0.145 263.6)
-
Step 500
500
#4D82F8
oklch(63.1% 0.185 263.7)
-
Step 600
600
#3268E7
oklch(55.7% 0.201 263.7)
-
Step 700
700
#2655C9
oklch(49.1% 0.188 264)
-
Step 800
800 (this color)
#234AA6
oklch(43.8% 0.155 263.8)
-
Step 900
900
#1F3C81
oklch(37.6% 0.122 264.2)
-
Step 950
950
#12244B
oklch(26.9% 0.076 263.5)
#234AA6 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) | #0056A9 | 0.032 |
| Deuteranopia (no green cones) | #004AA4 | 0.019 |
| Tritanopia (no blue cones) | #006170 | 0.123 |
| Achromatopsia (no color) | #505050 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234AA6
#234AA6
oklch(43.8% 0.155 263.8)
- #694D00
#694D00
oklch(43.8% 0.09 84.4)
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 #234AA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.038
- Sapphire #2138AB ΔE 0.044
- Blueberry #464196 ΔE 0.050
- Dusk Blue #26538D ΔE 0.051
- Blue Blue #2242C7 ΔE 0.056
- Light Navy #155084 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.066
- Denim Blue #3B5B92 ΔE 0.068
Use #234AA6 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.