#234EB3
Closest named color: Blue Blue (#2242C7). oklch(45.7% 0.168 263.7), rgb(35, 78, 179).
Aa
White text reads best on this color (7.46:1).
About this color
#234EB3 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.168 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.042 away. White text reads best on it, at 7.46:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.81:1 |
| White text | 7.46:1 |
Values
| HEX | #234EB3 |
| RGB | rgb(35, 78, 179) |
| HSL | hsl(222, 67%, 42%) |
| OKLCH | oklch(45.7% 0.168 263.7) |
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 #234EB3 | 7.46:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #234EB3 | 2.81:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #234EB3 text on white | 7.46:1 | AAA | Lc 85.4 | Fine for body text |
| #234EB3 text on black | 2.81:1 | Fails | Lc -16.6 | 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 800.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C7DAFE
oklch(88.6% 0.054 263.2)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6E9DFF
oklch(70.6% 0.153 263.6)
-
Step 500
500
#4881FF
oklch(63.2% 0.197 263.5)
-
Step 600
600
#2B65F0
oklch(55.6% 0.218 263.6)
-
Step 700
700
#1F53D1
oklch(49.2% 0.202 263.6)
-
Step 800
800 (this color)
#234EB3
oklch(45.7% 0.168 263.7)
-
Step 900
900
#1B3B86
oklch(37.7% 0.132 263.8)
-
Step 950
950
#10234E
oklch(26.8% 0.083 263.8)
#234EB3 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) | #005CB6 | 0.036 |
| Deuteranopia (no green cones) | #004FB1 | 0.017 |
| Tritanopia (no blue cones) | #006779 | 0.130 |
| Achromatopsia (no color) | #555555 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234EB3
#234EB3
oklch(45.7% 0.168 263.7)
- #705200
#705200
oklch(45.8% 0.094 84.1)
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 #234EB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.042
- Sapphire #2138AB ΔE 0.054
- Cobalt #1E488F ΔE 0.060
- Majorelle Blue #3F37C9 ΔE 0.063
- Blueberry #464196 ΔE 0.064
- Dusk Blue #26538D ΔE 0.065
- Blue With A Hint Of Purple #533CC6 ΔE 0.072
- Denim Blue #3B5B92 ΔE 0.073
Use #234EB3 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.