#2E57DF
Closest named color: Azul (#1D5DEC). oklch(51.6% 0.212 266), rgb(46, 87, 223).
Aa
White text reads best on this color (5.92:1).
About this color
#2E57DF is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.212 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.025 away. White text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.212) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.54:1 |
| White text | 5.92:1 |
Values
| HEX | #2E57DF |
| RGB | rgb(46, 87, 223) |
| HSL | hsl(226, 73%, 53%) |
| OKLCH | oklch(51.6% 0.212 266) |
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 #2E57DF | 5.92:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #2E57DF | 3.54:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #2E57DF text on white | 5.92:1 | AA | Lc 78.9 | Fine for body text |
| #2E57DF text on black | 3.54:1 | AA large text | Lc -22.9 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#517FFF
oklch(63.2% 0.197 266)
-
Step 600
600
#3461F6
oklch(55.6% 0.228 266)
-
Step 700
700 (this color)
#2E57DF
oklch(51.6% 0.212 266)
-
Step 800
800
#2142AD
oklch(42.8% 0.175 265.9)
-
Step 900
900
#1F3989
oklch(37.7% 0.137 266.2)
-
Step 950
950
#122250
oklch(26.9% 0.087 266.2)
#2E57DF 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) | #006CE3 | 0.049 |
| Deuteranopia (no green cones) | #005CDC | 0.022 |
| Tritanopia (no blue cones) | #007A93 | 0.164 |
| Achromatopsia (no color) | #646464 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2E57DF
#2E57DF
oklch(51.6% 0.212 266)
- #836200
#836200
oklch(51.6% 0.106 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 #2E57DF, closest first.
No curated palette has a color within ΔE 0.04 of #2E57DF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.025
- Warm Blue #4B57DB ΔE 0.031
- Neon Blue #4361EE ΔE 0.041
- Royal Blue #4169E1 ΔE 0.050
- Electric Blue #0652FF ΔE 0.053
- Bright Blue #0165FC ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.057
- Blue Blue #2242C7 ΔE 0.064
Use #2E57DF 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.