#5A91BF
Closest named color: Faded Blue (#658CBB). oklch(63.7% 0.091 245.1), rgb(90, 145, 191).
Aa
Black text reads best on this color (6.23:1).
About this color
#5A91BF is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.091 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.016 away. Black text reads best on it, at 6.23:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.23:1 |
| White text | 3.36:1 |
Values
| HEX | #5A91BF |
| RGB | rgb(90, 145, 191) |
| HSL | hsl(207, 44%, 55%) |
| OKLCH | oklch(63.7% 0.091 245.1) |
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 #5A91BF | 3.36:1 | AA large text | Lc -66.5 | Content text, not long reading |
| Black text on #5A91BF | 6.23:1 | AA | Lc 43.1 | Non-text elements, placeholder text |
| #5A91BF text on white | 3.36:1 | AA large text | Lc 61.0 | Content text, not long reading |
| #5A91BF text on black | 6.23:1 | AA | Lc -40.7 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300
#AAC4DC
oklch(80.9% 0.044 246.2)
-
Step 400
400
#7BA6CA
oklch(70.7% 0.07 244.3)
-
Step 500
500 (this color)
#5A91BF
oklch(63.7% 0.091 245.1)
-
Step 600
600
#3C79A9
oklch(55.7% 0.098 244.7)
-
Step 700
700
#2E6591
oklch(49% 0.092 245.4)
-
Step 800
800
#275376
oklch(42.8% 0.076 245)
-
Step 900
900
#25455F
oklch(37.8% 0.059 244.8)
-
Step 950
950
#162838
oklch(26.9% 0.038 246.6)
#5A91BF 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) | #7E92C1 | 0.043 |
| Deuteranopia (no green cones) | #7087BE | 0.035 |
| Tritanopia (no blue cones) | #1F9CA1 | 0.076 |
| Achromatopsia (no color) | #8C8C8C | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A91BF
#5A91BF
oklch(63.7% 0.091 245.1)
- #B1804E
#B1804E
oklch(63.8% 0.09 65.6)
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 #5A91BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.016
- Dusty Blue #5A86AD ΔE 0.036
- Off Blue #5684AE ΔE 0.041
- Cool Blue #4984B8 ΔE 0.043
- Silver Lake Blue #778DA9 ΔE 0.043
- Blue Grey #758DA3 ΔE 0.048
- Steel Blue #4682B4 ΔE 0.050
- Blue NCS #118AB2 ΔE 0.058
Use #5A91BF 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.