#234CBA
Closest named color: Blue Blue (#2242C7). oklch(45.9% 0.18 264.6), rgb(35, 76, 186).
Aa
White text reads best on this color (7.46:1).
About this color
#234CBA is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.180 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.030 away. White text reads best on it, at 7.46:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.81:1 |
| White text | 7.46:1 |
Values
| HEX | #234CBA |
| RGB | rgb(35, 76, 186) |
| HSL | hsl(224, 68%, 43%) |
| OKLCH | oklch(45.9% 0.18 264.6) |
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 #234CBA | 7.46:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #234CBA | 2.81:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #234CBA text on white | 7.46:1 | AAA | Lc 85.3 | Fine for body text |
| #234CBA text on black | 2.81:1 | Fails | Lc -16.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6FE
oklch(97.2% 0.012 264.5)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#C9D9FA
oklch(88.4% 0.049 264.9)
-
Step 300
300
#A5C0FA
oklch(80.9% 0.088 265.1)
-
Step 400
400
#759EF7
oklch(70.8% 0.138 264.4)
-
Step 500
500
#5282F4
oklch(63.1% 0.179 264.6)
-
Step 600
600
#3868E2
oklch(55.5% 0.193 264.6)
-
Step 700
700 (this color)
#234CBA
oklch(45.9% 0.18 264.6)
-
Step 800
800
#24479F
oklch(42.7% 0.149 264.5)
-
Step 900
900
#223D7E
oklch(37.8% 0.115 264.5)
-
Step 950
950
#14244A
oklch(27% 0.074 264.7)
#234CBA 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) | #005CBE | 0.040 |
| Deuteranopia (no green cones) | #004EB8 | 0.017 |
| Tritanopia (no blue cones) | #00687B | 0.140 |
| Achromatopsia (no color) | #555555 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234CBA
#234CBA
oklch(45.9% 0.18 264.6)
- #705300
#705300
oklch(46% 0.094 85.1)
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 #234CBA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.030
- Majorelle Blue #3F37C9 ΔE 0.053
- Sapphire #2138AB ΔE 0.053
- Blue With A Hint Of Purple #533CC6 ΔE 0.066
- Cobalt #1E488F ΔE 0.071
- Blueberry #464196 ΔE 0.071
- Blurple #5539CC ΔE 0.073
- Warm Blue #4B57DB ΔE 0.076
Use #234CBA 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.