#507CEF
Closest named color: Cornflower (#6A79F7). oklch(61.4% 0.18 265.6), rgb(80, 124, 239).
Aa
Black text reads best on this color (5.47:1).
About this color
#507CEF is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.180 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.033 away. Black text reads best on it, at 5.47:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.47:1 |
| White text | 3.83:1 |
Values
| HEX | #507CEF |
| RGB | rgb(80, 124, 239) |
| HSL | hsl(223, 83%, 63%) |
| OKLCH | oklch(61.4% 0.18 265.6) |
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 #507CEF | 3.83:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #507CEF | 5.47:1 | AA | Lc 38.5 | Non-text elements, placeholder text |
| #507CEF text on white | 3.83:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #507CEF text on black | 5.47:1 | AA | Lc -36.1 | 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 500.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A6C0FA
oklch(80.9% 0.087 265.8)
-
Step 400
400
#769DF8
oklch(70.7% 0.141 265.4)
-
Step 500
500 (this color)
#507CEF
oklch(61.4% 0.18 265.6)
-
Step 600
600
#3B67E4
oklch(55.6% 0.196 265.6)
-
Step 700
700
#2E55C6
oklch(49.1% 0.182 265.5)
-
Step 800
800
#2746A0
oklch(42.7% 0.151 265.8)
-
Step 900
900
#233C7F
oklch(37.7% 0.118 265.6)
-
Step 950
950
#15244A
oklch(27% 0.073 265.6)
#507CEF 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) | #3E8AF3 | 0.036 |
| Deuteranopia (no green cones) | #127BED | 0.041 |
| Tritanopia (no blue cones) | #0097AA | 0.148 |
| Achromatopsia (no color) | #828282 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #507CEF
#507CEF
oklch(61.4% 0.18 265.6)
- #A67D00
#A67D00
oklch(61.3% 0.126 85.4)
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 #507CEF, closest first.
No curated palette has a color within ΔE 0.04 of #507CEF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.033
- Clear Blue #247AFD ΔE 0.039
- Soft Blue #6488EA ΔE 0.042
- Dark Sky Blue #448EE4 ΔE 0.052
- Royal Blue #4169E1 ΔE 0.055
- Dodger Blue #1E90FF ΔE 0.056
- Cerulean Blue #056EEE ΔE 0.063
- Chefchaouen Blue #4895EF ΔE 0.065
Use #507CEF 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.