#436DFF
Closest named color: Clear Blue (#247AFD). oklch(59.1% 0.222 267), rgb(67, 109, 255).
Aa
Black text reads best on this color (4.87:1).
About this color
#436DFF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.222 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.034 away. Black text reads best on it, at 4.87:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.222) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 4.87:1 |
| White text | 4.31:1 |
Values
| HEX | #436DFF |
| RGB | rgb(67, 109, 255) |
| HSL | hsl(227, 100%, 63%) |
| OKLCH | oklch(59.1% 0.222 267) |
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 #436DFF | 4.31:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #436DFF | 4.87:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #436DFF text on white | 4.31:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #436DFF text on black | 4.87:1 | AA | Lc -32.4 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#769BFF
oklch(70.7% 0.152 267.2)
-
Step 500
500
#547EFF
oklch(63.1% 0.197 267)
-
Step 600
600 (this color)
#436DFF
oklch(59.1% 0.222 267)
-
Step 700
700
#2D4FD3
oklch(49.1% 0.206 266.9)
-
Step 800
800
#2642AB
oklch(42.8% 0.171 267.1)
-
Step 900
900
#223987
oklch(37.6% 0.134 267.2)
-
Step 950
950
#14224F
oklch(26.9% 0.085 267.4)
#436DFF 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 | 0.055 |
| Deuteranopia (no green cones) | #0071FC | 0.033 |
| Tritanopia (no blue cones) | #0092AC | 0.176 |
| Achromatopsia (no color) | #7A7A7A | 0.222 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436DFF
#436DFF
oklch(59.1% 0.222 267)
- #9D7800
#9D7800
oklch(59.3% 0.121 86.9)
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 #436DFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.034
- Neon Blue #4361EE ΔE 0.037
- Cerulean Blue #056EEE ΔE 0.043
- Bright Blue #0165FC ΔE 0.044
- Royal Blue #4169E1 ΔE 0.046
- Cornflower #6A79F7 ΔE 0.058
- Azul #1D5DEC ΔE 0.060
- Warm Blue #4B57DB ΔE 0.072
Use #436DFF 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.