#407C8C
Closest named color: Cerulean (#457B9D). oklch(55.2% 0.067 217.3), rgb(64, 124, 140).
Aa
White text reads best on this color (4.68:1).
About this color
#407C8C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 55%, its chroma 0.067 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.029 away. White text reads best on it, at 4.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.47:1 |
| White text | 4.68:1 |
Values
| HEX | #407C8C |
| RGB | rgb(64, 124, 140) |
| HSL | hsl(193, 37%, 40%) |
| OKLCH | oklch(55.2% 0.067 217.3) |
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 #407C8C | 4.68:1 | AA | Lc -77.9 | Fine for body text |
| Black text on #407C8C | 4.47:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #407C8C text on white | 4.68:1 | AA | Lc 72.4 | Content text, not long reading |
| #407C8C text on black | 4.47:1 | AA large text | Lc -29.3 | 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
#CEDCE0
oklch(88.5% 0.016 216.7)
-
Step 300
300
#ACC6CD
oklch(80.9% 0.03 215.8)
-
Step 400
400
#7FA8B4
oklch(70.6% 0.048 217.7)
-
Step 500
500
#5D93A2
oklch(63.1% 0.061 217.3)
-
Step 600
600 (this color)
#407C8C
oklch(55.2% 0.067 217.3)
-
Step 700
700
#326978
oklch(49% 0.063 218)
-
Step 800
800
#2B5662
oklch(42.7% 0.052 218.2)
-
Step 900
900
#274750
oklch(37.7% 0.041 217.9)
-
Step 950
950
#182A2F
oklch(27.2% 0.025 217.2)
#407C8C 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) | #71798D | 0.058 |
| Deuteranopia (no green cones) | #66708C | 0.053 |
| Tritanopia (no blue cones) | #078281 | 0.041 |
| Achromatopsia (no color) | #747474 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #407C8C
#407C8C
oklch(55.2% 0.067 217.3)
- #956556
#956556
oklch(55.4% 0.067 38.1)
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 #407C8C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.029
- Metallic Blue #4F738E ΔE 0.031
- Ocean #017B92 ΔE 0.032
- Stormy Blue #507B9C ΔE 0.033
- Dull Blue #49759C ΔE 0.039
- Grey Blue #647D8E ΔE 0.041
- Teal #008080 ΔE 0.041
- Deep Aqua #08787F ΔE 0.042
Use #407C8C 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.