#2347AB
Closest named color: Sapphire (#2138AB). oklch(43.6% 0.166 265), rgb(35, 71, 171).
Aa
White text reads best on this color (8.20:1).
About this color
#2347AB is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.166 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.036 away. White text reads best on it, at 8.20:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.56:1 |
| White text | 8.20:1 |
Values
| HEX | #2347AB |
| RGB | rgb(35, 71, 171) |
| HSL | hsl(224, 66%, 40%) |
| OKLCH | oklch(43.6% 0.166 265) |
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 #2347AB | 8.20:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #2347AB | 2.56:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #2347AB text on white | 8.20:1 | AAA | Lc 87.8 | Fine for body text |
| #2347AB text on black | 2.56:1 | Fails | Lc -14.4 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C8D9FE
oklch(88.5% 0.054 265.8)
-
Step 300
300
#A3C0FF
oklch(80.9% 0.095 265.2)
-
Step 400
400
#729CFF
oklch(70.6% 0.153 265.4)
-
Step 500
500
#4D7FFF
oklch(63% 0.198 265.1)
-
Step 600
600
#3364EF
oklch(55.6% 0.216 265.1)
-
Step 700
700
#2752D0
oklch(49.1% 0.2 265.1)
-
Step 800
800 (this color)
#2347AB
oklch(43.6% 0.166 265)
-
Step 900
900
#1F3B85
oklch(37.7% 0.129 265.1)
-
Step 950
950
#12234E
oklch(26.9% 0.082 265.1)
#2347AB 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) | #0055AE | 0.036 |
| Deuteranopia (no green cones) | #0049A9 | 0.018 |
| Tritanopia (no blue cones) | #006072 | 0.129 |
| Achromatopsia (no color) | #4F4F4F | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2347AB
#2347AB
oklch(43.6% 0.166 265)
- #684D00
#684D00
oklch(43.7% 0.09 85.3)
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 #2347AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.036
- Blue Blue #2242C7 ΔE 0.046
- Cobalt #1E488F ΔE 0.047
- Blueberry #464196 ΔE 0.054
- Dusk Blue #26538D ΔE 0.062
- Majorelle Blue #3F37C9 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.070
- Light Navy #155084 ΔE 0.072
Use #2347AB 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.