#407C8F
Closest named color: Cerulean (#457B9D). oklch(55.4% 0.069 220.9), rgb(64, 124, 143).
Aa
White text reads best on this color (4.66:1).
About this color
#407C8F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 55%, its chroma 0.069 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.024 away. White text reads best on it, at 4.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.49:1 |
| White text | 4.66:1 |
Values
| HEX | #407C8F |
| RGB | rgb(64, 124, 143) |
| HSL | hsl(194, 38%, 41%) |
| OKLCH | oklch(55.4% 0.069 220.9) |
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 #407C8F | 4.66:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #407C8F | 4.49:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #407C8F text on white | 4.66:1 | AA | Lc 72.3 | Content text, not long reading |
| #407C8F text on black | 4.49:1 | AA large text | Lc -29.4 | 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
#CDDCE1
oklch(88.5% 0.018 219.7)
-
Step 300
300
#ACC6CF
oklch(81% 0.031 220.7)
-
Step 400
400
#7FA8B6
oklch(70.7% 0.049 220.9)
-
Step 500
500
#5C93A5
oklch(63.2% 0.064 220.8)
-
Step 600
600 (this color)
#407C8F
oklch(55.4% 0.069 220.9)
-
Step 700
700
#32697A
oklch(49.1% 0.064 220.7)
-
Step 800
800
#2A5663
oklch(42.7% 0.053 219.5)
-
Step 900
900
#274751
oklch(37.8% 0.041 220.1)
-
Step 950
950
#17292F
oklch(26.8% 0.026 221)
#407C8F 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) | #717990 | 0.058 |
| Deuteranopia (no green cones) | #65708F | 0.052 |
| Tritanopia (no blue cones) | #008282 | 0.044 |
| Achromatopsia (no color) | #747474 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #407C8F
#407C8F
oklch(55.4% 0.069 220.9)
- #966553
#966553
oklch(55.4% 0.069 41)
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 #407C8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.024
- Stormy Blue #507B9C ΔE 0.028
- Metallic Blue #4F738E ΔE 0.029
- Ocean #017B92 ΔE 0.032
- Dull Blue #49759C ΔE 0.035
- Grey Blue #647D8E ΔE 0.040
- Teal Blue #01889F ΔE 0.041
- Deep Aqua #08787F ΔE 0.045
Use #407C8F 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.