#475CBB
Closest named color: Iris (#6258C4). oklch(50.9% 0.151 270.8), rgb(71, 92, 187).
Aa
White text reads best on this color (5.97:1).
About this color
#475CBB is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.151 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.041 away. White text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.51:1 |
| White text | 5.97:1 |
Values
| HEX | #475CBB |
| RGB | rgb(71, 92, 187) |
| HSL | hsl(229, 46%, 51%) |
| OKLCH | oklch(50.9% 0.151 270.8) |
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 #475CBB | 5.97:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #475CBB | 3.51:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #475CBB text on white | 5.97:1 | AA | Lc 79.6 | Fine for body text |
| #475CBB text on black | 3.51:1 | AA large text | Lc -22.3 | 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 700.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CFD8F5
oklch(88.4% 0.041 271.9)
-
Step 300
300
#AFBFF1
oklch(81% 0.073 270.9)
-
Step 400
400
#859CEA
oklch(70.7% 0.117 270.7)
-
Step 500
500
#6881E3
oklch(63% 0.15 270.8)
-
Step 600
600
#5169D1
oklch(55.7% 0.162 270.6)
-
Step 700
700 (this color)
#475CBB
oklch(50.9% 0.151 270.8)
-
Step 800
800
#364792
oklch(42.6% 0.125 270.7)
-
Step 900
900
#2F3C75
oklch(37.6% 0.098 271.3)
-
Step 950
950
#1B2444
oklch(27% 0.061 270.1)
#475CBB 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) | #2769BE | 0.041 |
| Deuteranopia (no green cones) | #065FB9 | 0.046 |
| Tritanopia (no blue cones) | #007283 | 0.129 |
| Achromatopsia (no color) | #636363 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #475CBB
#475CBB
oklch(50.9% 0.151 270.8)
- #7C6300
#7C6300
oklch(51% 0.104 91.4)
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 #475CBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.041
- Mid Blue #276AB3 ΔE 0.048
- French Blue #436BAD ΔE 0.049
- Warm Blue #4B57DB ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.057
- Light Indigo #6D5ACF ΔE 0.063
- Royal Blue #4169E1 ΔE 0.064
Use #475CBB 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.