#436AE0
Closest named color: Royal Blue (#4169E1). oklch(56.2% 0.185 266.6), rgb(67, 106, 224).
Aa
White text reads best on this color (4.79:1).
About this color
#436AE0 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.185 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.004 away. White text reads best on it, at 4.79:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.185) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.37:1 |
| White text | 4.79:1 |
Values
| HEX | #436AE0 |
| RGB | rgb(67, 106, 224) |
| HSL | hsl(225, 72%, 57%) |
| OKLCH | oklch(56.2% 0.185 266.6) |
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 #436AE0 | 4.79:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #436AE0 | 4.37:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #436AE0 text on white | 4.79:1 | AA | Lc 72.9 | Content text, not long reading |
| #436AE0 text on black | 4.37:1 | AA large text | Lc -28.8 | Dividers and decoration only |
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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9F9
oklch(88.5% 0.047 266.7)
-
Step 300
300
#A8C0F7
oklch(80.9% 0.083 266.3)
-
Step 400
400
#7A9DF4
oklch(70.7% 0.134 266.4)
-
Step 500
500
#5A82EF
oklch(63.1% 0.169 266.5)
-
Step 600
600 (this color)
#436AE0
oklch(56.2% 0.185 266.6)
-
Step 700
700
#3456C1
oklch(49.2% 0.172 266.6)
-
Step 800
800
#2B479C
oklch(42.7% 0.143 266.6)
-
Step 900
900
#263C7C
oklch(37.6% 0.112 266.7)
-
Step 950
950
#172448
oklch(27% 0.069 266.8)
#436AE0 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) | #157AE4 | 0.044 |
| Deuteranopia (no green cones) | #006BDE | 0.036 |
| Tritanopia (no blue cones) | #00869B | 0.148 |
| Achromatopsia (no color) | #727272 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436AE0
#436AE0
oklch(56.2% 0.185 266.6)
- #926F00
#926F00
oklch(56.1% 0.115 86.6)
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 #436AE0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.004
- Neon Blue #4361EE ΔE 0.031
- Cerulean Blue #056EEE ΔE 0.038
- Warm Blue #4B57DB ΔE 0.044
- Azul #1D5DEC ΔE 0.050
- Dark Periwinkle #665FD1 ΔE 0.051
- Clear Blue #247AFD ΔE 0.057
- Bright Blue #0165FC ΔE 0.057
Use #436AE0 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.