#4591C3
Closest named color: Faded Blue (#658CBB). oklch(63% 0.106 240.3), rgb(69, 145, 195).
Aa
Black text reads best on this color (6.09:1).
About this color
#4591C3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.106 and its hue 240°. 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 6.09:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.09:1 |
| White text | 3.44:1 |
Values
| HEX | #4591C3 |
| RGB | rgb(69, 145, 195) |
| HSL | hsl(204, 51%, 52%) |
| OKLCH | oklch(63% 0.106 240.3) |
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 #4591C3 | 3.44:1 | AA large text | Lc -67.2 | Content text, not long reading |
| Black text on #4591C3 | 6.09:1 | AA | Lc 42.3 | Non-text elements, placeholder text |
| #4591C3 text on white | 3.44:1 | AA large text | Lc 61.8 | Content text, not long reading |
| #4591C3 text on black | 6.09:1 | AA | Lc -39.9 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEB
oklch(88.5% 0.029 241.6)
-
Step 300
300
#A3C6DF
oklch(80.9% 0.052 239.4)
-
Step 400
400
#6FA8D0
oklch(70.8% 0.084 240.1)
-
Step 500
500 (this color)
#4591C3
oklch(63% 0.106 240.3)
-
Step 600
600
#207BB0
oklch(55.7% 0.116 240.1)
-
Step 700
700
#0F6797
oklch(49% 0.108 240.3)
-
Step 800
800
#13547B
oklch(42.7% 0.09 240.9)
-
Step 900
900
#194663
oklch(37.8% 0.07 240.6)
-
Step 950
950
#10293A
oklch(27% 0.044 240.8)
#4591C3 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) | #7A91C5 | 0.056 |
| Deuteranopia (no green cones) | #6985C2 | 0.045 |
| Tritanopia (no blue cones) | #009DA2 | 0.076 |
| Achromatopsia (no color) | #8A8A8A | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4591C3
#4591C3
oklch(63% 0.106 240.3)
- #B87941
#B87941
oklch(63.1% 0.107 60.5)
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 #4591C3, 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 0.037
- Dusty Blue #5A86AD ΔE 0.041
- Off Blue #5684AE ΔE 0.042
- Steel Blue #4682B4 ΔE 0.044
- Blue NCS #118AB2 ΔE 0.045
- Water Blue #0E87CC ΔE 0.047
- Dark Sky Blue #448EE4 ΔE 0.053
Use #4591C3 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.