#4F91AB
Closest named color: Dusty Blue (#5A86AD). oklch(62.3% 0.078 225.8), rgb(79, 145, 171).
Aa
Black text reads best on this color (5.97:1).
About this color
#4F91AB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.078 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.034 away. Black text reads best on it, at 5.97:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.97:1 |
| White text | 3.51:1 |
Values
| HEX | #4F91AB |
| RGB | rgb(79, 145, 171) |
| HSL | hsl(197, 37%, 49%) |
| OKLCH | oklch(62.3% 0.078 225.8) |
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 #4F91AB | 3.51:1 | AA large text | Lc -68.1 | Content text, not long reading |
| Black text on #4F91AB | 5.97:1 | AA | Lc 41.5 | Non-text elements, placeholder text |
| #4F91AB text on white | 3.51:1 | AA large text | Lc 62.6 | Content text, not long reading |
| #4F91AB text on black | 5.97:1 | AA | Lc -39.1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3ECEF
oklch(93.7% 0.01 219.6)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A8C6D4
oklch(80.9% 0.038 227.7)
-
Step 400
400
#77A9BE
oklch(70.7% 0.061 226)
-
Step 500
500 (this color)
#4F91AB
oklch(62.3% 0.078 225.8)
-
Step 600
600
#327D99
oklch(55.5% 0.085 226.2)
-
Step 700
700
#246A83
oklch(49.2% 0.079 225.7)
-
Step 800
800
#20566A
oklch(42.6% 0.065 226)
-
Step 900
900
#204756
oklch(37.6% 0.051 225.8)
-
Step 950
950
#142A32
oklch(27.1% 0.032 223.6)
#4F91AB 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) | #838EAC | 0.060 |
| Deuteranopia (no green cones) | #7684AB | 0.054 |
| Tritanopia (no blue cones) | #0C9999 | 0.055 |
| Achromatopsia (no color) | #898989 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F91AB
#4F91AB
oklch(62.3% 0.078 225.8)
- #AF785F
#AF785F
oklch(62.3% 0.078 45.3)
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 #4F91AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.034
- Off Blue #5684AE ΔE 0.039
- Faded Blue #658CBB ΔE 0.040
- Blue Grey #758DA3 ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.044
- Blue NCS #118AB2 ΔE 0.046
- Cool Blue #4984B8 ΔE 0.048
- Light Slate Gray #778899 ΔE 0.050
Use #4F91AB 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.