#0571FD
Closest named color: Cerulean Blue (#056EEE). oklch(58.3% 0.225 259.2), rgb(5, 113, 253).
Aa
Black text reads best on this color (4.78:1).
About this color
#0571FD is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.225 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.024 away. Black text reads best on it, at 4.78:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.225) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.78:1 |
| White text | 4.38:1 |
Values
| HEX | #0571FD |
| RGB | rgb(5, 113, 253) |
| HSL | hsl(214, 98%, 51%) |
| OKLCH | oklch(58.3% 0.225 259.2) |
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 #0571FD | 4.38:1 | AA large text | Lc -75.0 | Content text, not long reading |
| Black text on #0571FD | 4.78:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #0571FD text on white | 4.38:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #0571FD text on black | 4.78:1 | AA | Lc -32.2 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C3DBFF
oklch(88.5% 0.056 258.4)
-
Step 300
300
#9BC2FF
oklch(80.8% 0.097 259.2)
-
Step 400
400
#63A0FF
oklch(70.7% 0.154 259)
-
Step 500
500
#3484FF
oklch(63.1% 0.199 259.1)
-
Step 600
600 (this color)
#0571FD
oklch(58.3% 0.225 259.2)
-
Step 700
700
#0058CA
oklch(49.1% 0.191 259.1)
-
Step 800
800
#0048A8
oklch(42.8% 0.167 259.1)
-
Step 900
900
#0A3D87
oklch(37.7% 0.134 259.1)
-
Step 950
950
#09244F
oklch(26.9% 0.086 259.6)
#0571FD 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) | #0083FF | 0.044 |
| Deuteranopia (no green cones) | #006FFA | 0.007 |
| Tritanopia (no blue cones) | #0095AC | 0.171 |
| Achromatopsia (no color) | #787878 | 0.226 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0571FD
#0571FD
oklch(58.3% 0.225 259.2)
- #A17100
#A17100
oklch(58.3% 0.121 79.1)
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 #0571FD, closest first.
No curated palette has a color within ΔE 0.04 of #0571FD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.024
- Clear Blue #247AFD ΔE 0.026
- Bright Blue #0165FC ΔE 0.028
- Neon Blue #4361EE ΔE 0.048
- Royal Blue #4169E1 ΔE 0.051
- Azul #1D5DEC ΔE 0.052
- Electric Blue #0652FF ΔE 0.068
- Dodger Blue #1E90FF ΔE 0.080
Use #0571FD 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.