#437AE7
Closest named color: Clear Blue (#247AFD). oklch(59.9% 0.175 262.3), rgb(67, 122, 231).
Aa
Black text reads best on this color (5.17:1).
About this color
#437AE7 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.175 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.038 away. Black text reads best on it, at 5.17:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.17:1 |
| White text | 4.05:1 |
Values
| HEX | #437AE7 |
| RGB | rgb(67, 122, 231) |
| HSL | hsl(220, 77%, 58%) |
| OKLCH | oklch(59.9% 0.175 262.3) |
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 #437AE7 | 4.05:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #437AE7 | 5.17:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #437AE7 text on white | 4.05:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #437AE7 text on black | 5.17:1 | AA | Lc -34.3 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A3C1F9
oklch(80.9% 0.086 262.7)
-
Step 400
400
#719FF6
oklch(70.7% 0.138 262.3)
-
Step 500
500 (this color)
#437AE7
oklch(59.9% 0.175 262.3)
-
Step 600
600
#306AE1
oklch(55.5% 0.192 262.4)
-
Step 700
700
#2358C3
oklch(49.1% 0.177 262.2)
-
Step 800
800
#1E499E
oklch(42.8% 0.147 262.1)
-
Step 900
900
#1E3E7D
oklch(37.7% 0.114 262.2)
-
Step 950
950
#122549
oklch(27% 0.071 261.9)
#437AE7 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) | #3F86EB | 0.031 |
| Deuteranopia (no green cones) | #1277E5 | 0.031 |
| Tritanopia (no blue cones) | #0094A5 | 0.141 |
| Achromatopsia (no color) | #7E7E7E | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #437AE7
#437AE7
oklch(59.9% 0.175 262.3)
- #A47700
#A47700
oklch(59.9% 0.123 82.1)
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 #437AE7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.038
- Royal Blue #4169E1 ΔE 0.043
- Cornflower #6A79F7 ΔE 0.050
- Cerulean Blue #056EEE ΔE 0.050
- Soft Blue #6488EA ΔE 0.054
- Dark Sky Blue #448EE4 ΔE 0.054
- Dodger Blue #1E90FF ΔE 0.062
- Neon Blue #4361EE ΔE 0.062
Use #437AE7 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.