#455F6F
Closest named color: YInMn Blue (#415A77). oklch(47.1% 0.04 235.8), rgb(69, 95, 111).
Aa
White text reads best on this color (6.73:1).
About this color
#455F6F is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.040 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.024 away. White text reads best on it, at 6.73:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.11:1 |
| White text | 6.73:1 |
Values
| HEX | #455F6F |
| RGB | rgb(69, 95, 111) |
| HSL | hsl(203, 23%, 35%) |
| OKLCH | oklch(47.1% 0.04 235.8) |
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 #455F6F | 6.73:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #455F6F | 3.11:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #455F6F text on white | 6.73:1 | AA | Lc 83.2 | Fine for body text |
| #455F6F text on black | 3.11:1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAED
oklch(93.5% 0.006 239.8)
-
Step 200
200
#D3DADF
oklch(88.4% 0.01 238.5)
-
Step 300
300
#B5C3CC
oklch(80.9% 0.02 235.8)
-
Step 400
400
#8FA4B2
oklch(70.7% 0.031 237.1)
-
Step 500
500
#738E9F
oklch(63.2% 0.04 235.9)
-
Step 600
600
#5B788A
oklch(55.7% 0.044 235.8)
-
Step 700
700 (this color)
#455F6F
oklch(47.1% 0.04 235.8)
-
Step 800
800
#3D525F
oklch(42.6% 0.034 235.8)
-
Step 900
900
#34444E
oklch(37.7% 0.027 235.9)
-
Step 950
950
#1F282E
oklch(27.1% 0.017 237.4)
#455F6F 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) | #585E70 | 0.026 |
| Deuteranopia (no green cones) | #525A6F | 0.022 |
| Tritanopia (no blue cones) | #366364 | 0.031 |
| Achromatopsia (no color) | #5C5C5C | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455F6F
#455F6F
oklch(47.1% 0.04 235.8)
- #6D5545
#6D5545
oklch(47% 0.041 55.2)
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 #455F6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.024
- Slate #516572 ΔE 0.026
- Dusty Grape #545775 ΔE 0.035
- Denim #3B638C ΔE 0.046
- Dusk #4E5481 ΔE 0.052
- Petrol #005F6A ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.054
- Dark Aqua #05696B ΔE 0.054
Use #455F6F 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.