#234FAF
Closest named color: Blue Blue (#2242C7). oklch(45.6% 0.161 263), rgb(35, 79, 175).
Aa
White text reads best on this color (7.47:1).
About this color
#234FAF is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.161 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.049 away. White text reads best on it, at 7.47:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.80:1 |
| White text | 7.47:1 |
Values
| HEX | #234FAF |
| RGB | rgb(35, 79, 175) |
| HSL | hsl(221, 67%, 41%) |
| OKLCH | oklch(45.6% 0.161 263) |
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 #234FAF | 7.47:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #234FAF | 2.80:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #234FAF text on white | 7.47:1 | AAA | Lc 85.5 | Fine for body text |
| #234FAF text on black | 2.80:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFD
oklch(88.5% 0.053 262.7)
-
Step 300
300
#A1C1FE
oklch(81% 0.094 263)
-
Step 400
400
#6E9EFE
oklch(70.8% 0.15 263)
-
Step 500
500
#4882FC
oklch(63.2% 0.192 263)
-
Step 600
600
#2B67EB
oklch(55.6% 0.209 263)
-
Step 700
700
#1F55CD
oklch(49.2% 0.195 263)
-
Step 800
800 (this color)
#234FAF
oklch(45.6% 0.161 263)
-
Step 900
900
#1B3C83
oklch(37.6% 0.126 263)
-
Step 950
950
#11244D
oklch(27.1% 0.08 263.3)
#234FAF 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) | #005CB2 | 0.034 |
| Deuteranopia (no green cones) | #004FAD | 0.018 |
| Tritanopia (no blue cones) | #006777 | 0.126 |
| Achromatopsia (no color) | #555555 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234FAF
#234FAF
oklch(45.6% 0.161 263)
- #705100
#705100
oklch(45.6% 0.094 83)
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 #234FAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.049
- Cobalt #1E488F ΔE 0.055
- Sapphire #2138AB ΔE 0.056
- Dusk Blue #26538D ΔE 0.058
- Blueberry #464196 ΔE 0.061
- Denim Blue #3B5B92 ΔE 0.067
- Majorelle Blue #3F37C9 ΔE 0.068
- Light Navy #155084 ΔE 0.072
Use #234FAF 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.