#4376AD
Closest named color: Flat Blue (#3C73A8). oklch(55.5% 0.102 251.7), rgb(67, 118, 173).
Aa
White text reads best on this color (4.73:1).
About this color
#4376AD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.102 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.013 away. White text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.43:1 |
| White text | 4.73:1 |
Values
| HEX | #4376AD |
| RGB | rgb(67, 118, 173) |
| HSL | hsl(211, 44%, 47%) |
| OKLCH | oklch(55.5% 0.102 251.7) |
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 #4376AD | 4.73:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #4376AD | 4.43:1 | AA large text | Lc 31.4 | Non-text elements, placeholder text |
| #4376AD text on white | 4.73:1 | AA | Lc 72.7 | Content text, not long reading |
| #4376AD text on black | 4.43:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CDDBEA
oklch(88.5% 0.026 250)
-
Step 300
300
#ACC3DE
oklch(80.9% 0.046 252.5)
-
Step 400
400
#7FA4CE
oklch(70.7% 0.074 252)
-
Step 500
500
#5E8DC1
oklch(63.1% 0.094 251.8)
-
Step 600
600 (this color)
#4376AD
oklch(55.5% 0.102 251.7)
-
Step 700
700
#356395
oklch(49.1% 0.095 252.1)
-
Step 800
800
#2C5179
oklch(42.7% 0.079 251.8)
-
Step 900
900
#284361
oklch(37.6% 0.061 252.1)
-
Step 950
950
#182839
oklch(27.1% 0.038 250.8)
#4376AD 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) | #5F79AF | 0.034 |
| Deuteranopia (no green cones) | #516EAC | 0.025 |
| Tritanopia (no blue cones) | #00838A | 0.084 |
| Achromatopsia (no color) | #737373 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4376AD
#4376AD
oklch(55.5% 0.102 251.7)
- #986824
#986824
oklch(55.5% 0.102 71.7)
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 #4376AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.013
- Muted Blue #3B719F ΔE 0.026
- Dull Blue #49759C ΔE 0.027
- Windows Blue #3778BF ΔE 0.028
- Nice Blue #107AB0 ΔE 0.030
- French Blue #436BAD ΔE 0.032
- Cerulean #457B9D ΔE 0.033
- Steel Blue #4682B4 ΔE 0.035
Use #4376AD 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.