#40697E
Closest named color: Slate (#516572). oklch(49.9% 0.057 231.8), rgb(64, 105, 126).
Aa
White text reads best on this color (5.93:1).
About this color
#40697E is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.057 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.026 away. White text reads best on it, at 5.93:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.53:1 |
| White text | 5.93:1 |
Values
| HEX | #40697E |
| RGB | rgb(64, 105, 126) |
| HSL | hsl(200, 33%, 37%) |
| OKLCH | oklch(49.9% 0.057 231.8) |
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 #40697E | 5.93:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #40697E | 3.53:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #40697E text on white | 5.93:1 | AA | Lc 79.6 | Fine for body text |
| #40697E text on black | 3.53:1 | AA large text | Lc -22.2 | 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
#86A6B8
oklch(70.7% 0.044 232.8)
-
Step 500
500
#6690A6
oklch(63.1% 0.057 231.6)
-
Step 600
600
#4D7A91
oklch(55.6% 0.061 231.6)
-
Step 700
700 (this color)
#40697E
oklch(49.9% 0.057 231.8)
-
Step 800
800
#335464
oklch(42.7% 0.047 230.3)
-
Step 900
900
#2D4552
oklch(37.6% 0.037 232.7)
-
Step 950
950
#1B2930
oklch(27.1% 0.023 230.3)
#40697E 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) | #5F687F | 0.040 |
| Deuteranopia (no green cones) | #56617E | 0.034 |
| Tritanopia (no blue cones) | #226F70 | 0.042 |
| Achromatopsia (no color) | #646464 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40697E
#40697E
oklch(49.9% 0.057 231.8)
- #7D5A45
#7D5A45
oklch(49.9% 0.056 52)
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 #40697E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.026
- Denim #3B638C ΔE 0.034
- Metallic Blue #4F738E ΔE 0.041
- YInMn Blue #415A77 ΔE 0.044
- Sea Blue #047495 ΔE 0.048
- Deep Turquoise #017374 ΔE 0.052
- Muted Blue #3B719F ΔE 0.052
- Deep Aqua #08787F ΔE 0.052
Use #40697E 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.