#40758C
Closest named color: Metallic Blue (#4F738E). oklch(53.5% 0.067 228.1), rgb(64, 117, 140).
Aa
White text reads best on this color (5.07:1).
About this color
#40758C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.067 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.017 away. White text reads best on it, at 5.07:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.14:1 |
| White text | 5.07:1 |
Values
| HEX | #40758C |
| RGB | rgb(64, 117, 140) |
| HSL | hsl(198, 37%, 40%) |
| OKLCH | oklch(53.5% 0.067 228.1) |
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 #40758C | 5.07:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #40758C | 4.14:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #40758C text on white | 5.07:1 | AA | Lc 74.9 | Content text, not long reading |
| #40758C text on black | 4.14:1 | AA large text | Lc -26.8 | 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 600.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE2
oklch(88.6% 0.017 225.2)
-
Step 300
300
#ADC5D0
oklch(80.9% 0.03 227.1)
-
Step 400
400
#82A7B9
oklch(70.7% 0.048 229.2)
-
Step 500
500
#6191A7
oklch(63.1% 0.061 228.5)
-
Step 600
600 (this color)
#40758C
oklch(53.5% 0.067 228.1)
-
Step 700
700
#37687D
oklch(49.2% 0.063 227.9)
-
Step 800
800
#2E5565
oklch(42.8% 0.052 226.6)
-
Step 900
900
#2A4653
oklch(37.8% 0.04 229.1)
-
Step 950
950
#192930
oklch(27% 0.025 227.2)
#40758C 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) | #69738D | 0.049 |
| Deuteranopia (no green cones) | #5E6B8C | 0.043 |
| Tritanopia (no blue cones) | #0C7C7C | 0.049 |
| Achromatopsia (no color) | #6E6E6E | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40758C
#40758C
oklch(53.5% 0.067 228.1)
- #8E614B
#8E614B
oklch(53.5% 0.068 46.9)
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 #40758C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.017
- Dull Blue #49759C ΔE 0.028
- Cerulean #457B9D ΔE 0.030
- Ocean #017B92 ΔE 0.033
- Stormy Blue #507B9C ΔE 0.035
- Sea Blue #047495 ΔE 0.035
- Muted Blue #3B719F ΔE 0.036
- Deep Aqua #08787F ΔE 0.042
Use #40758C 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.