#2D57DE
Closest named color: Azul (#1D5DEC). oklch(51.5% 0.211 265.8), rgb(45, 87, 222).
Aa
White text reads best on this color (5.94:1).
About this color
#2D57DE is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.211 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.026 away. White text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.211) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.52:1 |
| White text | 5.94:1 |
Values
| HEX | #2D57DE |
| RGB | rgb(45, 87, 222) |
| HSL | hsl(226, 73%, 52%) |
| OKLCH | oklch(51.5% 0.211 265.8) |
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 #2D57DE | 5.94:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #2D57DE | 3.52:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #2D57DE text on white | 5.94:1 | AA | Lc 79.0 | Fine for body text |
| #2D57DE text on black | 3.52:1 | AA large text | Lc -22.8 | 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
#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
#739CFF
oklch(70.7% 0.152 265.7)
-
Step 500
500
#507FFF
oklch(63.1% 0.197 265.8)
-
Step 600
600
#3361F5
oklch(55.5% 0.227 265.8)
-
Step 700
700 (this color)
#2D57DE
oklch(51.5% 0.211 265.8)
-
Step 800
800
#2142AD
oklch(42.8% 0.175 265.9)
-
Step 900
900
#1F3A89
oklch(37.9% 0.136 265.8)
-
Step 950
950
#122350
oklch(27.1% 0.086 265.4)
#2D57DE 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) | #006CE2 | 0.049 |
| Deuteranopia (no green cones) | #005CDB | 0.022 |
| Tritanopia (no blue cones) | #007A92 | 0.164 |
| Achromatopsia (no color) | #646464 | 0.211 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D57DE
#2D57DE
oklch(51.5% 0.211 265.8)
- #826200
#826200
oklch(51.5% 0.105 86.2)
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 #2D57DE, closest first.
No curated palette has a color within ΔE 0.04 of #2D57DE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.026
- Warm Blue #4B57DB ΔE 0.032
- Neon Blue #4361EE ΔE 0.043
- Royal Blue #4169E1 ΔE 0.050
- Electric Blue #0652FF ΔE 0.054
- Bright Blue #0165FC ΔE 0.055
- Cerulean Blue #056EEE ΔE 0.057
- Blue Blue #2242C7 ΔE 0.063
Use #2D57DE 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.