#4B91CA
Closest named color: Faded Blue (#658CBB). oklch(63.6% 0.111 245.4), rgb(75, 145, 202).
Aa
Black text reads best on this color (6.20:1).
About this color
#4B91CA is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.111 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.032 away. Black text reads best on it, at 6.20:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.20:1 |
| White text | 3.38:1 |
Values
| HEX | #4B91CA |
| RGB | rgb(75, 145, 202) |
| HSL | hsl(207, 55%, 54%) |
| OKLCH | oklch(63.6% 0.111 245.4) |
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 #4B91CA | 3.38:1 | AA large text | Lc -66.6 | Content text, not long reading |
| Black text on #4B91CA | 6.20:1 | AA | Lc 42.9 | Non-text elements, placeholder text |
| #4B91CA text on white | 3.38:1 | AA large text | Lc 61.1 | Content text, not long reading |
| #4B91CA text on black | 6.20:1 | AA | Lc -40.6 | 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 500.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#C9DCEC
oklch(88.5% 0.03 243.4)
-
Step 300
300
#A4C5E2
oklch(80.9% 0.054 245.1)
-
Step 400
400
#72A6D4
oklch(70.6% 0.087 246.1)
-
Step 500
500 (this color)
#4B91CA
oklch(63.6% 0.111 245.4)
-
Step 600
600
#2879B5
oklch(55.7% 0.121 245.2)
-
Step 700
700
#19659C
oklch(49% 0.113 245.7)
-
Step 800
800
#18537E
oklch(42.7% 0.093 244.9)
-
Step 900
900
#1B4566
oklch(37.8% 0.073 245.3)
-
Step 950
950
#11283B
oklch(26.8% 0.046 245.6)
#4B91CA 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) | #7892CD | 0.049 |
| Deuteranopia (no green cones) | #6786C9 | 0.038 |
| Tritanopia (no blue cones) | #009FA5 | 0.086 |
| Achromatopsia (no color) | #8B8B8B | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B91CA
#4B91CA
oklch(63.6% 0.111 245.4)
- #B97C3A
#B97C3A
oklch(63.7% 0.111 65.4)
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 #4B91CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.032
- Cool Blue #4984B8 ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.042
- Dusty Blue #5A86AD ΔE 0.047
- Water Blue #0E87CC ΔE 0.048
- Off Blue #5684AE ΔE 0.048
- Steel Blue #4682B4 ΔE 0.049
- Chefchaouen Blue #4895EF ΔE 0.055
Use #4B91CA 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.