#455BA4
Closest named color: Dusky Blue (#475F94). oklch(49% 0.12 269), rgb(69, 91, 164).
Aa
White text reads best on this color (6.39:1).
About this color
#455BA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.120 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.030 away. White text reads best on it, at 6.39:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.28:1 |
| White text | 6.39:1 |
Values
| HEX | #455BA4 |
| RGB | rgb(69, 91, 164) |
| HSL | hsl(226, 41%, 46%) |
| OKLCH | oklch(49% 0.12 269) |
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 #455BA4 | 6.39:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #455BA4 | 3.28:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #455BA4 text on white | 6.39:1 | AA | Lc 81.6 | Fine for body text |
| #455BA4 text on black | 3.28:1 | AA large text | Lc -20.3 | 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
#D0D9EF
oklch(88.5% 0.032 268)
-
Step 300
300
#B1C0E7
oklch(80.9% 0.058 268.6)
-
Step 400
400
#899EDB
oklch(70.7% 0.093 269.3)
-
Step 500
500
#6C85D1
oklch(63% 0.118 269)
-
Step 600
600
#556EBE
oklch(55.7% 0.128 268.9)
-
Step 700
700 (this color)
#455BA4
oklch(49% 0.12 269)
-
Step 800
800
#394B85
oklch(42.8% 0.099 269)
-
Step 900
900
#313F6B
oklch(37.8% 0.078 269.1)
-
Step 950
950
#1D253E
oklch(27% 0.048 269.5)
#455BA4 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) | #3B63A7 | 0.023 |
| Deuteranopia (no green cones) | #2E5BA2 | 0.025 |
| Tritanopia (no blue cones) | #016B77 | 0.108 |
| Achromatopsia (no color) | #5F5F5F | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455BA4
#455BA4
oklch(49% 0.12 269)
- #775D00
#775D00
oklch(49.1% 0.1 89.6)
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 #455BA4, closest first.
No curated palette has a color within ΔE 0.04 of #455BA4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.032
- French Blue #436BAD ΔE 0.044
- Twilight #4E518B ΔE 0.045
- Mid Blue #276AB3 ΔE 0.047
- Denim #3B638C ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.054
- Dusk #4E5481 ΔE 0.057
Use #455BA4 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.