#455F81
Closest named color: Denim (#3B638C). oklch(47.9% 0.064 255.4), rgb(69, 95, 129).
Aa
White text reads best on this color (6.54:1).
About this color
#455F81 is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.064 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.020 away. White text reads best on it, at 6.54:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.20:1 |
| White text | 6.54:1 |
Values
| HEX | #455F81 |
| RGB | rgb(69, 95, 129) |
| HSL | hsl(214, 30%, 39%) |
| OKLCH | oklch(47.9% 0.064 255.4) |
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 #455F81 | 6.54:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #455F81 | 3.20:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #455F81 text on white | 6.54:1 | AA | Lc 82.4 | Fine for body text |
| #455F81 text on black | 3.20:1 | AA large text | Lc -19.5 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B4C2D5
oklch(80.9% 0.031 256)
-
Step 400
400
#8DA3BF
oklch(70.8% 0.048 254.6)
-
Step 500
500
#708CAF
oklch(63.2% 0.062 254.3)
-
Step 600
600
#58759B
oklch(55.5% 0.068 255.4)
-
Step 700
700 (this color)
#455F81
oklch(47.9% 0.064 255.4)
-
Step 800
800
#3B506C
oklch(42.6% 0.054 255.8)
-
Step 900
900
#334357
oklch(37.8% 0.04 254.3)
-
Step 950
950
#1E2733
oklch(27% 0.026 255.7)
#455F81 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) | #526183 | 0.019 |
| Deuteranopia (no green cones) | #4B5B80 | 0.013 |
| Tritanopia (no blue cones) | #2D676B | 0.056 |
| Achromatopsia (no color) | #5D5D5D | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455F81
#455F81
oklch(47.9% 0.064 255.4)
- #725833
#725833
oklch(47.8% 0.063 75.1)
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 #455F81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.020
- YInMn Blue #415A77 ΔE 0.021
- Dusty Grape #545775 ΔE 0.031
- Dusky Blue #475F94 ΔE 0.032
- Dusk #4E5481 ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.035
- Slate #516572 ΔE 0.038
Use #455F81 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.