#40667A
Closest named color: Slate (#516572). oklch(49% 0.054 232.4), rgb(64, 102, 122).
Aa
White text reads best on this color (6.17:1).
About this color
#40667A is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.054 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.023 away. White text reads best on it, at 6.17:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.39:1 |
| White text | 6.17:1 |
Values
| HEX | #40667A |
| RGB | rgb(64, 102, 122) |
| HSL | hsl(201, 31%, 36%) |
| OKLCH | oklch(49% 0.054 232.4) |
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 #40667A | 6.17:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #40667A | 3.39:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #40667A text on white | 6.17:1 | AA | Lc 80.7 | Fine for body text |
| #40667A text on black | 3.39:1 | AA large text | Lc -21.1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE1
oklch(88.5% 0.015 231.2)
-
Step 300
300
#B1C4CF
oklch(80.9% 0.026 233.1)
-
Step 400
400
#87A6B7
oklch(70.8% 0.042 232.1)
-
Step 500
500
#6990A5
oklch(63.2% 0.053 232.2)
-
Step 600
600
#507A90
oklch(55.7% 0.058 232)
-
Step 700
700 (this color)
#40667A
oklch(49% 0.054 232.4)
-
Step 800
800
#355363
oklch(42.5% 0.044 232.5)
-
Step 900
900
#2F4551
oklch(37.7% 0.034 232.7)
-
Step 950
950
#1C282F
oklch(26.9% 0.021 234.2)
#40667A 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) | #5C657B | 0.036 |
| Deuteranopia (no green cones) | #545E7A | 0.033 |
| Tritanopia (no blue cones) | #266B6C | 0.040 |
| Achromatopsia (no color) | #616161 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40667A
#40667A
oklch(49% 0.054 232.4)
- #795844
#795844
oklch(49% 0.053 52.3)
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 #40667A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.023
- Denim #3B638C ΔE 0.034
- YInMn Blue #415A77 ΔE 0.036
- Dusty Grape #545775 ΔE 0.048
- Dark Aqua #05696B ΔE 0.050
- Metallic Blue #4F738E ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.053
- Dusky Blue #475F94 ΔE 0.053
Use #40667A 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.