#437EFD
Closest named color: Clear Blue (#247AFD). oklch(62.3% 0.199 263.1), rgb(67, 126, 253).
Aa
Black text reads best on this color (5.64:1).
About this color
#437EFD is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.199 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.025 away. Black text reads best on it, at 5.64:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.199) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.64:1 |
| White text | 3.72:1 |
Values
| HEX | #437EFD |
| RGB | rgb(67, 126, 253) |
| HSL | hsl(221, 98%, 63%) |
| OKLCH | oklch(62.3% 0.199 263.1) |
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 #437EFD | 3.72:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #437EFD | 5.64:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #437EFD text on white | 3.72:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #437EFD text on black | 5.64:1 | AA | Lc -37.3 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFE
oklch(88.6% 0.054 263.2)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6D9EFF
oklch(70.8% 0.152 262.8)
-
Step 500
500 (this color)
#437EFD
oklch(62.3% 0.199 263.1)
-
Step 600
600
#2966EF
oklch(55.6% 0.216 263.1)
-
Step 700
700
#1C53D0
oklch(49% 0.201 263.1)
-
Step 800
800
#1945A8
oklch(42.6% 0.167 263.1)
-
Step 900
900
#1A3C85
oklch(37.8% 0.129 262.9)
-
Step 950
950
#10244E
oklch(27.1% 0.082 263)
#437EFD 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) | #2E8DFF | 0.037 |
| Deuteranopia (no green cones) | #007CFA | 0.032 |
| Tritanopia (no blue cones) | #009CB2 | 0.156 |
| Achromatopsia (no color) | #848484 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #437EFD
#437EFD
oklch(62.3% 0.199 263.1)
- #AC7E00
#AC7E00
oklch(62.2% 0.128 82.8)
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 #437EFD, closest first.
No curated palette has a color within ΔE 0.04 of #437EFD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.025
- Cornflower #6A79F7 ΔE 0.041
- Dodger Blue #1E90FF ΔE 0.046
- Soft Blue #6488EA ΔE 0.054
- Dark Sky Blue #448EE4 ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.061
- Royal Blue #4169E1 ΔE 0.065
- Chefchaouen Blue #4895EF ΔE 0.067
Use #437EFD 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.