#477A9A
Closest named color: Cerulean (#457B9D). oklch(55.7% 0.074 237.7), rgb(71, 122, 154).
Aa
White text reads best on this color (4.64:1).
About this color
#477A9A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.074 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.005 away. White text reads best on it, at 4.64:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.51:1 |
| White text | 4.64:1 |
Values
| HEX | #477A9A |
| RGB | rgb(71, 122, 154) |
| HSL | hsl(203, 37%, 44%) |
| OKLCH | oklch(55.7% 0.074 237.7) |
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 #477A9A | 4.64:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #477A9A | 4.51:1 | AA | Lc 31.9 | Non-text elements, placeholder text |
| #477A9A text on white | 4.64:1 | AA | Lc 72.2 | Content text, not long reading |
| #477A9A text on black | 4.51:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE4
oklch(88.4% 0.019 237.8)
-
Step 300
300
#ADC4D4
oklch(80.8% 0.034 238.3)
-
Step 400
400
#82A6BE
oklch(70.7% 0.053 237.7)
-
Step 500
500
#6190AE
oklch(63.1% 0.068 237.3)
-
Step 600
600 (this color)
#477A9A
oklch(55.7% 0.074 237.7)
-
Step 700
700
#386683
oklch(49% 0.069 238)
-
Step 800
800
#2F546B
oklch(42.8% 0.057 237.4)
-
Step 900
900
#2A4557
oklch(37.7% 0.045 238.8)
-
Step 950
950
#192933
oklch(27.1% 0.028 236.7)
#477A9A 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) | #6B799C | 0.043 |
| Deuteranopia (no green cones) | #607199 | 0.036 |
| Tritanopia (no blue cones) | #138285 | 0.058 |
| Achromatopsia (no color) | #747474 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477A9A
#477A9A
oklch(55.7% 0.074 237.7)
- #956847
#956847
oklch(55.6% 0.075 56.8)
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 #477A9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.005
- Stormy Blue #507B9C ΔE 0.011
- Dull Blue #49759C ΔE 0.016
- Metallic Blue #4F738E ΔE 0.024
- Muted Blue #3B719F ΔE 0.033
- Flat Blue #3C73A8 ΔE 0.036
- Grey Blue #647D8E ΔE 0.040
- Steel Blue #4682B4 ΔE 0.042
Use #477A9A 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.