#407D91
Closest named color: Cerulean (#457B9D). oklch(55.7% 0.07 221.7), rgb(64, 125, 145).
Aa
White text reads best on this color (4.60:1).
About this color
#407D91 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.070 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.023 away. White text reads best on it, at 4.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.56:1 |
| White text | 4.60:1 |
Values
| HEX | #407D91 |
| RGB | rgb(64, 125, 145) |
| HSL | hsl(195, 39%, 41%) |
| OKLCH | oklch(55.7% 0.07 221.7) |
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 #407D91 | 4.60:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #407D91 | 4.56:1 | AA | Lc 32.2 | Non-text elements, placeholder text |
| #407D91 text on white | 4.60:1 | AA | Lc 71.8 | Content text, not long reading |
| #407D91 text on black | 4.56:1 | AA | Lc -29.8 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
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
#ABC6CF
oklch(80.9% 0.032 219.9)
-
Step 400
400
#7EA8B7
oklch(70.6% 0.05 221.9)
-
Step 500
500
#5C93A5
oklch(63.2% 0.064 220.8)
-
Step 600
600 (this color)
#407D91
oklch(55.7% 0.07 221.7)
-
Step 700
700
#31697B
oklch(49.1% 0.065 221.7)
-
Step 800
800
#2A5664
oklch(42.8% 0.054 221.1)
-
Step 900
900
#274752
oklch(37.8% 0.042 222.2)
-
Step 950
950
#172930
oklch(26.9% 0.027 224.6)
#407D91 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) | #717A92 | 0.057 |
| Deuteranopia (no green cones) | #657191 | 0.052 |
| Tritanopia (no blue cones) | #008383 | 0.045 |
| Achromatopsia (no color) | #757575 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #407D91
#407D91
oklch(55.7% 0.07 221.7)
- #976653
#976653
oklch(55.7% 0.07 42)
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 #407D91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.023
- Stormy Blue #507B9C ΔE 0.027
- Metallic Blue #4F738E ΔE 0.031
- Ocean #017B92 ΔE 0.033
- Dull Blue #49759C ΔE 0.034
- Teal Blue #01889F ΔE 0.039
- Grey Blue #647D8E ΔE 0.039
- Teal #008080 ΔE 0.046
Use #407D91 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.