#455FAC
Closest named color: French Blue (#436BAD). oklch(50.4% 0.126 267.7), rgb(69, 95, 172).
Aa
White text reads best on this color (6.02:1).
About this color
#455FAC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.126 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.033 away. White text reads best on it, at 6.02:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.48:1 |
| White text | 6.02:1 |
Values
| HEX | #455FAC |
| RGB | rgb(69, 95, 172) |
| HSL | hsl(225, 43%, 47%) |
| OKLCH | oklch(50.4% 0.126 267.7) |
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 #455FAC | 6.02:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #455FAC | 3.48:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #455FAC text on white | 6.02:1 | AA | Lc 79.9 | Fine for body text |
| #455FAC text on black | 3.48:1 | AA large text | Lc -21.9 | 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 700.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#CFD9F0
oklch(88.5% 0.033 266.9)
-
Step 300
300
#AFC0E9
oklch(80.9% 0.061 267.4)
-
Step 400
400
#869FDE
oklch(70.8% 0.097 267.3)
-
Step 500
500
#6885D5
oklch(63% 0.125 267.7)
-
Step 600
600
#516EC2
oklch(55.7% 0.135 267.6)
-
Step 700
700 (this color)
#455FAC
oklch(50.4% 0.126 267.7)
-
Step 800
800
#364B88
oklch(42.8% 0.104 267.6)
-
Step 900
900
#2F3F6D
oklch(37.8% 0.082 267.9)
-
Step 950
950
#1B2540
oklch(27% 0.052 267.5)
#455FAC 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) | #3C68AF | 0.025 |
| Deuteranopia (no green cones) | #2D5FAA | 0.025 |
| Tritanopia (no blue cones) | #00707D | 0.110 |
| Achromatopsia (no color) | #636363 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455FAC
#455FAC
oklch(50.4% 0.126 267.7)
- #7D6000
#7D6000
oklch(50.4% 0.103 88)
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 #455FAC, closest first.
No curated palette has a color within ΔE 0.04 of #455FAC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.033
- Mid Blue #276AB3 ΔE 0.037
- Dusky Blue #475F94 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.045
- Denim #3B638C ΔE 0.057
- Flat Blue #3C73A8 ΔE 0.058
- Iris #6258C4 ΔE 0.058
- Muted Blue #3B719F ΔE 0.059
Use #455FAC 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.