#2E57D3
Closest named color: Warm Blue (#4B57DB). oklch(50.6% 0.197 265.6), rgb(46, 87, 211).
Aa
White text reads best on this color (6.14:1).
About this color
#2E57D3 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.197 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.034 away. White text reads best on it, at 6.14:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.197) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.42:1 |
| White text | 6.14:1 |
Values
| HEX | #2E57D3 |
| RGB | rgb(46, 87, 211) |
| HSL | hsl(225, 65%, 50%) |
| OKLCH | oklch(50.6% 0.197 265.6) |
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 #2E57D3 | 6.14:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #2E57D3 | 3.42:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #2E57D3 text on white | 6.14:1 | AA | Lc 80.0 | Fine for body text |
| #2E57D3 text on black | 3.42:1 | AA large text | Lc -21.8 | 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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FD
oklch(88.5% 0.053 266.4)
-
Step 300
300
#A3C0FF
oklch(80.9% 0.095 265.2)
-
Step 400
400
#739CFF
oklch(70.7% 0.152 265.7)
-
Step 500
500
#507FFD
oklch(63% 0.195 265.7)
-
Step 600
600
#3765ED
oklch(55.7% 0.211 265.6)
-
Step 700
700 (this color)
#2E57D3
oklch(50.6% 0.197 265.6)
-
Step 800
800
#2344A6
oklch(42.6% 0.163 265.6)
-
Step 900
900
#213B84
oklch(37.8% 0.127 265.8)
-
Step 950
950
#13234D
oklch(26.9% 0.08 265.6)
#2E57D3 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) | #006AD7 | 0.046 |
| Deuteranopia (no green cones) | #005AD1 | 0.022 |
| Tritanopia (no blue cones) | #00768C | 0.153 |
| Achromatopsia (no color) | #626262 | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2E57D3
#2E57D3
oklch(50.6% 0.197 265.6)
- #7F5F00
#7F5F00
oklch(50.5% 0.103 85.5)
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 #2E57D3, closest first.
No curated palette has a color within ΔE 0.04 of #2E57D3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.034
- Azul #1D5DEC ΔE 0.041
- Neon Blue #4361EE ΔE 0.054
- Royal Blue #4169E1 ΔE 0.055
- Blue Blue #2242C7 ΔE 0.055
- Cerulean Blue #056EEE ΔE 0.066
- Majorelle Blue #3F37C9 ΔE 0.068
- Iris #6258C4 ΔE 0.068
Use #2E57D3 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.