#455E77
Closest named color: YInMn Blue (#415A77). oklch(47.2% 0.051 248.9), rgb(69, 94, 119).
Aa
White text reads best on this color (6.72:1).
About this color
#455E77 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.051 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.014 away. White text reads best on it, at 6.72:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #455E77 |
| RGB | rgb(69, 94, 119) |
| HSL | hsl(210, 27%, 37%) |
| OKLCH | oklch(47.2% 0.051 248.9) |
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 #455E77 | 6.72:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #455E77 | 3.12:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #455E77 text on white | 6.72:1 | AA | Lc 83.1 | Fine for body text |
| #455E77 text on black | 3.12:1 | AA large text | Lc -18.8 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B5C2D0
oklch(80.8% 0.024 250.1)
-
Step 400
400
#8EA3B9
oklch(70.7% 0.04 249.6)
-
Step 500
500
#728CA7
oklch(63% 0.051 249.6)
-
Step 600
600
#5A7692
oklch(55.5% 0.055 248.8)
-
Step 700
700 (this color)
#455E77
oklch(47.2% 0.051 248.9)
-
Step 800
800
#3D5165
oklch(42.7% 0.042 248.8)
-
Step 900
900
#344352
oklch(37.6% 0.032 248.7)
-
Step 950
950
#1F2730
oklch(26.9% 0.02 251.6)
#455E77 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) | #545E78 | 0.021 |
| Deuteranopia (no green cones) | #4E5977 | 0.018 |
| Tritanopia (no blue cones) | #336466 | 0.044 |
| Achromatopsia (no color) | #5C5C5C | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455E77
#455E77
oklch(47.2% 0.051 248.9)
- #6E563C
#6E563C
oklch(47.1% 0.05 68.4)
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 #455E77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.014
- Dusty Grape #545775 ΔE 0.027
- Slate #516572 ΔE 0.031
- Denim #3B638C ΔE 0.034
- Dusk #4E5481 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.049
Use #455E77 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.