#5F91AA
Closest named color: Blue Grey (#758DA3). oklch(63.1% 0.066 230.9), rgb(95, 145, 170).
Aa
Black text reads best on this color (6.11:1).
About this color
#5F91AA is a medium-light, muted blue. In OKLCH its lightness is 63%, its chroma 0.066 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.027 away. Black text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #5F91AA |
| RGB | rgb(95, 145, 170) |
| HSL | hsl(200, 31%, 52%) |
| OKLCH | oklch(63.1% 0.066 230.9) |
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 #5F91AA | 3.43:1 | AA large text | Lc -67.2 | Content text, not long reading |
| Black text on #5F91AA | 6.11:1 | AA | Lc 42.3 | Non-text elements, placeholder text |
| #5F91AA text on white | 3.43:1 | AA large text | Lc 61.8 | Content text, not long reading |
| #5F91AA text on black | 6.11:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE3
oklch(88.6% 0.018 229)
-
Step 300
300
#ADC5D2
oklch(81% 0.032 231.4)
-
Step 400
400
#80A7BB
oklch(70.7% 0.051 230.7)
-
Step 500
500 (this color)
#5F91AA
oklch(63.1% 0.066 230.9)
-
Step 600
600
#447B95
oklch(55.6% 0.071 230.3)
-
Step 700
700
#35687F
oklch(49.2% 0.066 229.5)
-
Step 800
800
#2D5568
oklch(42.9% 0.055 230.5)
-
Step 900
900
#294654
oklch(37.7% 0.042 230.2)
-
Step 950
950
#182931
oklch(27% 0.027 229.2)
#5F91AA 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) | #858FAB | 0.047 |
| Deuteranopia (no green cones) | #7A87AA | 0.041 |
| Tritanopia (no blue cones) | #3F9899 | 0.048 |
| Achromatopsia (no color) | #8A8A8A | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F91AA
#5F91AA
oklch(63.1% 0.066 230.9)
- #AA7E65
#AA7E65
oklch(63% 0.066 50.8)
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 #5F91AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.027
- Silver Lake Blue #778DA9 ΔE 0.029
- Faded Blue #658CBB ΔE 0.034
- Dusty Blue #5A86AD ΔE 0.035
- Light Slate Gray #778899 ΔE 0.038
- Steel #738595 ΔE 0.042
- Off Blue #5684AE ΔE 0.042
- Cadet Blue #5F9EA0 ΔE 0.045
Use #5F91AA 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.