#40758A
Closest named color: Metallic Blue (#4F738E). oklch(53.4% 0.065 225.8), rgb(64, 117, 138).
Aa
White text reads best on this color (5.08:1).
About this color
#40758A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 53%, its chroma 0.065 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.019 away. White text reads best on it, at 5.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.12:1 |
| White text | 5.08:1 |
Values
| HEX | #40758A |
| RGB | rgb(64, 117, 138) |
| HSL | hsl(197, 37%, 40%) |
| OKLCH | oklch(53.4% 0.065 225.8) |
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 #40758A | 5.08:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #40758A | 4.12:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #40758A text on white | 5.08:1 | AA | Lc 75.0 | Content text, not long reading |
| #40758A text on black | 4.12:1 | AA large text | Lc -26.7 | 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 600.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE1
oklch(88.5% 0.017 221.1)
-
Step 300
300
#ADC5CF
oklch(80.9% 0.03 224.8)
-
Step 400
400
#82A7B7
oklch(70.7% 0.047 226.2)
-
Step 500
500
#6191A5
oklch(63% 0.06 226.1)
-
Step 600
600 (this color)
#40758A
oklch(53.4% 0.065 225.8)
-
Step 700
700
#38687B
oklch(49.1% 0.06 225.8)
-
Step 800
800
#2F5564
oklch(42.8% 0.05 225.5)
-
Step 900
900
#2A4652
oklch(37.7% 0.04 227)
-
Step 950
950
#192930
oklch(27% 0.025 227.2)
#40758A 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) | #6A738B | 0.051 |
| Deuteranopia (no green cones) | #5F6B8A | 0.044 |
| Tritanopia (no blue cones) | #107B7C | 0.045 |
| Achromatopsia (no color) | #6E6E6E | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40758A
#40758A
oklch(53.4% 0.065 225.8)
- #8D614D
#8D614D
oklch(53.4% 0.065 45.3)
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 #40758A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.019
- Dull Blue #49759C ΔE 0.032
- Cerulean #457B9D ΔE 0.032
- Ocean #017B92 ΔE 0.033
- Sea Blue #047495 ΔE 0.036
- Stormy Blue #507B9C ΔE 0.037
- Muted Blue #3B719F ΔE 0.039
- Deep Aqua #08787F ΔE 0.040
Use #40758A 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.