#1570FC
Closest named color: Cerulean Blue (#056EEE). oklch(58.2% 0.224 260.1), rgb(21, 112, 252).
Aa
Black text reads best on this color (4.75:1).
About this color
#1570FC is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.224 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.022 away. Black text reads best on it, at 4.75:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.224) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #1570FC |
| RGB | rgb(21, 112, 252) |
| HSL | hsl(216, 97%, 54%) |
| OKLCH | oklch(58.2% 0.224 260.1) |
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 #1570FC | 4.41:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #1570FC | 4.75:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #1570FC text on white | 4.41:1 | AA large text | Lc 69.8 | Content text, not long reading |
| #1570FC text on black | 4.75:1 | AA | Lc -31.9 | 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
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C4DAFF
oklch(88.4% 0.057 260.8)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#669FFF
oklch(70.7% 0.154 260.3)
-
Step 500
500
#3983FF
oklch(63.1% 0.199 260.2)
-
Step 600
600 (this color)
#1570FC
oklch(58.2% 0.224 260.1)
-
Step 700
700
#0056D0
oklch(49.2% 0.201 260.1)
-
Step 800
800
#0246AB
oklch(42.7% 0.173 260.1)
-
Step 900
900
#0E3D87
oklch(37.8% 0.134 259.8)
-
Step 950
950
#0A244F
oklch(26.9% 0.085 260)
#1570FC 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) | #0082FF | 0.043 |
| Deuteranopia (no green cones) | #006EF9 | 0.009 |
| Tritanopia (no blue cones) | #0093AB | 0.169 |
| Achromatopsia (no color) | #787878 | 0.224 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1570FC
#1570FC
oklch(58.2% 0.224 260.1)
- #A07100
#A07100
oklch(58.2% 0.121 79.7)
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 #1570FC, closest first.
No curated palette has a color within ΔE 0.04 of #1570FC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.022
- Clear Blue #247AFD ΔE 0.027
- Bright Blue #0165FC ΔE 0.027
- Neon Blue #4361EE ΔE 0.044
- Royal Blue #4169E1 ΔE 0.048
- Azul #1D5DEC ΔE 0.050
- Electric Blue #0652FF ΔE 0.067
- Warm Blue #4B57DB ΔE 0.078
Use #1570FC 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.