#475ECB
Closest named color: Warm Blue (#4B57DB). oklch(52.5% 0.17 270.5), rgb(71, 94, 203).
Aa
White text reads best on this color (5.62:1).
About this color
#475ECB is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.170 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.030 away. White text reads best on it, at 5.62:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #475ECB |
| RGB | rgb(71, 94, 203) |
| HSL | hsl(230, 56%, 54%) |
| OKLCH | oklch(52.5% 0.17 270.5) |
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 #475ECB | 5.62:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #475ECB | 3.73:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #475ECB text on white | 5.62:1 | AA | Lc 77.8 | Fine for body text |
| #475ECB text on black | 3.73:1 | AA large text | Lc -24.0 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CED8F6
oklch(88.4% 0.043 270.9)
-
Step 300
300
#AEBFF3
oklch(81% 0.076 270.6)
-
Step 400
400
#849CED
oklch(70.8% 0.122 270.5)
-
Step 500
500
#6681E7
oklch(63.1% 0.156 270.3)
-
Step 600
600 (this color)
#475ECB
oklch(52.5% 0.17 270.5)
-
Step 700
700
#4055B9
oklch(49% 0.159 270.5)
-
Step 800
800
#354796
oklch(42.8% 0.131 270.3)
-
Step 900
900
#2E3C77
oklch(37.7% 0.102 270.8)
-
Step 950
950
#1B2446
oklch(27.1% 0.064 270.5)
#475ECB 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) | #106ECF | 0.050 |
| Deuteranopia (no green cones) | #0062C9 | 0.045 |
| Tritanopia (no blue cones) | #00788B | 0.143 |
| Achromatopsia (no color) | #676767 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #475ECB
#475ECB
oklch(52.5% 0.17 270.5)
- #826700
#826700
oklch(52.6% 0.107 90.6)
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 #475ECB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.030
- Iris #6258C4 ΔE 0.039
- Royal Blue #4169E1 ΔE 0.041
- Dark Periwinkle #665FD1 ΔE 0.044
- Slate Blue #6A5ACD ΔE 0.048
- Light Indigo #6D5ACF ΔE 0.053
- Neon Blue #4361EE ΔE 0.054
- Mid Blue #276AB3 ΔE 0.058
Use #475ECB 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.