#455E9F
Closest named color: Dusky Blue (#475F94). oklch(49.4% 0.109 266.6), rgb(69, 94, 159).
Aa
White text reads best on this color (6.25:1).
About this color
#455E9F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.109 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.019 away. White text reads best on it, at 6.25:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.35:1 |
| White text | 6.25:1 |
Values
| HEX | #455E9F |
| RGB | rgb(69, 94, 159) |
| HSL | hsl(223, 39%, 45%) |
| OKLCH | oklch(49.4% 0.109 266.6) |
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 #455E9F | 6.25:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #455E9F | 3.35:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #455E9F text on white | 6.25:1 | AA | Lc 81.0 | Fine for body text |
| #455E9F text on black | 3.35:1 | AA large text | Lc -20.8 | 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 700.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B1C0E4
oklch(80.8% 0.054 267.4)
-
Step 400
400
#899FD6
oklch(70.6% 0.085 267.4)
-
Step 500
500
#6C87CB
oklch(63.1% 0.108 266.9)
-
Step 600
600
#5470B8
oklch(55.7% 0.117 266.6)
-
Step 700
700 (this color)
#455E9F
oklch(49.4% 0.109 266.6)
-
Step 800
800
#384C80
oklch(42.6% 0.09 266.7)
-
Step 900
900
#304067
oklch(37.7% 0.07 266.2)
-
Step 950
950
#1C263C
oklch(27.1% 0.044 265)
#455E9F 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) | #4365A2 | 0.019 |
| Deuteranopia (no green cones) | #385D9E | 0.016 |
| Tritanopia (no blue cones) | #0D6C77 | 0.097 |
| Achromatopsia (no color) | #606060 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455E9F
#455E9F
oklch(49.4% 0.109 266.6)
- #7A5D00
#7A5D00
oklch(49.4% 0.101 87.4)
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 #455E9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.019
- Denim Blue #3B5B92 ΔE 0.026
- French Blue #436BAD ΔE 0.039
- Denim #3B638C ΔE 0.039
- Twilight #4E518B ΔE 0.044
- Mid Blue #276AB3 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.048
- Dusk #4E5481 ΔE 0.051
Use #455E9F 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.