#40677D
Closest named color: Slate (#516572). oklch(49.4% 0.056 234.3), rgb(64, 103, 125).
Aa
White text reads best on this color (6.07:1).
About this color
#40677D is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.056 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.025 away. White text reads best on it, at 6.07:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.45:1 |
| White text | 6.07:1 |
Values
| HEX | #40677D |
| RGB | rgb(64, 103, 125) |
| HSL | hsl(202, 32%, 37%) |
| OKLCH | oklch(49.4% 0.056 234.3) |
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 #40677D | 6.07:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #40677D | 3.45:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #40677D text on white | 6.07:1 | AA | Lc 80.3 | Fine for body text |
| #40677D text on black | 3.45:1 | AA large text | Lc -21.6 | 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
#D0DBE2
oklch(88.5% 0.015 235.4)
-
Step 300
300
#B0C4D0
oklch(80.9% 0.028 234.1)
-
Step 400
400
#87A6B8
oklch(70.8% 0.043 233.7)
-
Step 500
500
#6890A7
oklch(63.2% 0.056 234)
-
Step 600
600
#4F7992
oklch(55.5% 0.061 235.5)
-
Step 700
700 (this color)
#40677D
oklch(49.4% 0.056 234.3)
-
Step 800
800
#345365
oklch(42.6% 0.047 234.9)
-
Step 900
900
#2E4552
oklch(37.7% 0.036 233.8)
-
Step 950
950
#1B2830
oklch(26.9% 0.023 235.8)
#40677D 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) | #5D667E | 0.037 |
| Deuteranopia (no green cones) | #545F7D | 0.033 |
| Tritanopia (no blue cones) | #246D6E | 0.043 |
| Achromatopsia (no color) | #626262 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40677D
#40677D
oklch(49.4% 0.056 234.3)
- #7B5943
#7B5943
oklch(49.4% 0.056 53.9)
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 #40677D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.025
- Denim #3B638C ΔE 0.031
- YInMn Blue #415A77 ΔE 0.038
- Metallic Blue #4F738E ΔE 0.046
- Dusty Grape #545775 ΔE 0.050
- Dusky Blue #475F94 ΔE 0.051
- Sea Blue #047495 ΔE 0.052
- Peacock Blue #016795 ΔE 0.052
Use #40677D 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.