#477B91
Closest named color: Cerulean (#457B9D). oklch(55.5% 0.065 227.2), rgb(71, 123, 145).
Aa
White text reads best on this color (4.65:1).
About this color
#477B91 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.065 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.019 away. White text reads best on it, at 4.65:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.50:1 |
| White text | 4.65:1 |
Values
| HEX | #477B91 |
| RGB | rgb(71, 123, 145) |
| HSL | hsl(198, 34%, 42%) |
| OKLCH | oklch(55.5% 0.065 227.2) |
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 #477B91 | 4.65:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #477B91 | 4.50:1 | AA | Lc 31.9 | Non-text elements, placeholder text |
| #477B91 text on white | 4.65:1 | AA | Lc 72.2 | Content text, not long reading |
| #477B91 text on black | 4.50:1 | AA | Lc -29.5 | 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
#CFDCE2
oklch(88.6% 0.016 227)
-
Step 300
300
#AEC5D0
oklch(81% 0.029 228.2)
-
Step 400
400
#82A7B8
oklch(70.7% 0.047 227.7)
-
Step 500
500
#6291A6
oklch(63.1% 0.06 227.7)
-
Step 600
600 (this color)
#477B91
oklch(55.5% 0.065 227.2)
-
Step 700
700
#38687C
oklch(49.2% 0.061 227.1)
-
Step 800
800
#2F5564
oklch(42.8% 0.05 225.5)
-
Step 900
900
#2A4652
oklch(37.7% 0.04 227)
-
Step 950
950
#192930
oklch(27% 0.025 227.2)
#477B91 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) | #6F7992 | 0.049 |
| Deuteranopia (no green cones) | #657191 | 0.044 |
| Tritanopia (no blue cones) | #1E8182 | 0.046 |
| Achromatopsia (no color) | #747474 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477B91
#477B91
oklch(55.5% 0.065 227.2)
- #936752
#936752
oklch(55.4% 0.065 46.4)
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 #477B91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.019
- Stormy Blue #507B9C ΔE 0.021
- Metallic Blue #4F738E ΔE 0.023
- Dull Blue #49759C ΔE 0.029
- Grey Blue #647D8E ΔE 0.035
- Ocean #017B92 ΔE 0.038
- Muted Blue #3B719F ΔE 0.044
- Battleship Grey #6B7C85 ΔE 0.046
Use #477B91 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.