#2A57D6
Closest named color: Warm Blue (#4B57DB). oklch(50.7% 0.201 264.9), rgb(42, 87, 214).
Aa
White text reads best on this color (6.11:1).
About this color
#2A57D6 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.201 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.036 away. White text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.43:1 |
| White text | 6.11:1 |
Values
| HEX | #2A57D6 |
| RGB | rgb(42, 87, 214) |
| HSL | hsl(224, 68%, 50%) |
| OKLCH | oklch(50.7% 0.201 264.9) |
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 #2A57D6 | 6.11:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #2A57D6 | 3.43:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #2A57D6 text on white | 6.11:1 | AA | Lc 79.9 | Fine for body text |
| #2A57D6 text on black | 3.43:1 | AA large text | Lc -22.0 | 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
#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
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400
#719CFF
oklch(70.6% 0.153 265)
-
Step 500
500
#4D80FF
oklch(63.2% 0.197 264.8)
-
Step 600
600
#3264EF
oklch(55.5% 0.216 264.9)
-
Step 700
700 (this color)
#2A57D6
oklch(50.7% 0.201 264.9)
-
Step 800
800
#2044A8
oklch(42.7% 0.166 264.9)
-
Step 900
900
#1E3B85
oklch(37.7% 0.129 264.7)
-
Step 950
950
#12234E
oklch(26.9% 0.082 265.1)
#2A57D6 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) | #006ADA | 0.046 |
| Deuteranopia (no green cones) | #005AD4 | 0.019 |
| Tritanopia (no blue cones) | #00788E | 0.157 |
| Achromatopsia (no color) | #626262 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A57D6
#2A57D6
oklch(50.7% 0.201 264.9)
- #805F00
#805F00
oklch(50.6% 0.104 84.8)
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 #2A57D6, closest first.
No curated palette has a color within ΔE 0.04 of #2A57D6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.036
- Azul #1D5DEC ΔE 0.036
- Neon Blue #4361EE ΔE 0.053
- Royal Blue #4169E1 ΔE 0.055
- Blue Blue #2242C7 ΔE 0.055
- Cerulean Blue #056EEE ΔE 0.064
- Electric Blue #0652FF ΔE 0.065
- Bright Blue #0165FC ΔE 0.066
Use #2A57D6 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.