#407B8F
Closest named color: Cerulean (#457B9D). oklch(55.1% 0.069 222.4), rgb(64, 123, 143).
Aa
White text reads best on this color (4.72:1).
About this color
#407B8F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 55%, its chroma 0.069 and its hue 222°. 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 4.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #407B8F |
| RGB | rgb(64, 123, 143) |
| HSL | hsl(195, 38%, 41%) |
| OKLCH | oklch(55.1% 0.069 222.4) |
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 #407B8F | 4.72:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #407B8F | 4.44:1 | AA large text | Lc 31.4 | Non-text elements, placeholder text |
| #407B8F text on white | 4.72:1 | AA | Lc 72.6 | Content text, not long reading |
| #407B8F text on black | 4.44:1 | AA large text | Lc -29.0 | 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
#ACC6CF
oklch(81% 0.031 220.7)
-
Step 400
400
#7FA8B7
oklch(70.7% 0.049 222.4)
-
Step 500
500
#5D92A5
oklch(63% 0.063 222.7)
-
Step 600
600 (this color)
#407B8F
oklch(55.1% 0.069 222.4)
-
Step 700
700
#33697B
oklch(49.2% 0.064 222.3)
-
Step 800
800
#2B5664
oklch(42.8% 0.053 221.5)
-
Step 900
900
#274751
oklch(37.8% 0.041 220.1)
-
Step 950
950
#182930
oklch(26.9% 0.026 225.8)
#407B8F 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) | #6F7890 | 0.056 |
| Deuteranopia (no green cones) | #64708F | 0.050 |
| Tritanopia (no blue cones) | #008181 | 0.046 |
| Achromatopsia (no color) | #737373 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #407B8F
#407B8F
oklch(55.1% 0.069 222.4)
- #956552
#956552
oklch(55.3% 0.069 42.4)
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 #407B8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.024
- Metallic Blue #4F738E ΔE 0.026
- Stormy Blue #507B9C ΔE 0.028
- Ocean #017B92 ΔE 0.031
- Dull Blue #49759C ΔE 0.032
- Grey Blue #647D8E ΔE 0.041
- Sea Blue #047495 ΔE 0.043
- Teal Blue #01889F ΔE 0.043
Use #407B8F 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.