#477E9F
Closest named color: Cerulean (#457B9D). oklch(56.9% 0.078 236.6), rgb(71, 126, 159).
Aa
Black text reads best on this color (4.75:1).
About this color
#477E9F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.078 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.009 away. Black text reads best on it, at 4.75:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #477E9F |
| RGB | rgb(71, 126, 159) |
| HSL | hsl(203, 38%, 45%) |
| OKLCH | oklch(56.9% 0.078 236.6) |
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 #477E9F | 4.41:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #477E9F | 4.75:1 | AA | Lc 33.6 | Non-text elements, placeholder text |
| #477E9F text on white | 4.41:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #477E9F text on black | 4.75:1 | AA | Lc -31.2 | Non-text elements, placeholder text |
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
#ACC5D5
oklch(81% 0.035 236)
-
Step 400
400
#80A6BF
oklch(70.6% 0.055 237.4)
-
Step 500
500
#5E90AF
oklch(63% 0.071 236.7)
-
Step 600
600 (this color)
#477E9F
oklch(56.9% 0.078 236.6)
-
Step 700
700
#356784
oklch(49.2% 0.071 236.2)
-
Step 800
800
#2C546C
oklch(42.7% 0.06 236.8)
-
Step 900
900
#284557
oklch(37.6% 0.047 237.1)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#477E9F 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) | #6F7DA1 | 0.047 |
| Deuteranopia (no green cones) | #63749E | 0.040 |
| Tritanopia (no blue cones) | #048789 | 0.062 |
| Achromatopsia (no color) | #787878 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477E9F
#477E9F
oklch(56.9% 0.078 236.6)
- #9A6B49
#9A6B49
oklch(56.9% 0.077 56.4)
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 #477E9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.009
- Stormy Blue #507B9C ΔE 0.011
- Dull Blue #49759C ΔE 0.026
- Steel Blue #4682B4 ΔE 0.032
- Off Blue #5684AE ΔE 0.032
- Metallic Blue #4F738E ΔE 0.035
- Dusty Blue #5A86AD ΔE 0.037
- Grey Blue #647D8E ΔE 0.039
Use #477E9F 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.