#4F90AB
Closest named color: Dusty Blue (#5A86AD). oklch(62.1% 0.078 227.1), rgb(79, 144, 171).
Aa
Black text reads best on this color (5.90:1).
About this color
#4F90AB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.078 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.031 away. Black text reads best on it, at 5.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.90:1 |
| White text | 3.55:1 |
Values
| HEX | #4F90AB |
| RGB | rgb(79, 144, 171) |
| HSL | hsl(198, 37%, 49%) |
| OKLCH | oklch(62.1% 0.078 227.1) |
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 #4F90AB | 3.55:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #4F90AB | 5.90:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #4F90AB text on white | 3.55:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #4F90AB text on black | 5.90:1 | AA | Lc -38.7 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
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
#78A9BE
oklch(70.8% 0.06 226.5)
-
Step 500
500 (this color)
#4F90AB
oklch(62.1% 0.078 227.1)
-
Step 600
600
#337D9A
oklch(55.6% 0.085 227.3)
-
Step 700
700
#256983
oklch(49% 0.079 227.3)
-
Step 800
800
#21566B
oklch(42.7% 0.065 227.5)
-
Step 900
900
#214757
oklch(37.7% 0.051 227.9)
-
Step 950
950
#142A33
oklch(27.1% 0.033 226.5)
#4F90AB 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) | #828EAC | 0.059 |
| Deuteranopia (no green cones) | #7483AB | 0.052 |
| Tritanopia (no blue cones) | #0D9899 | 0.055 |
| Achromatopsia (no color) | #888888 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F90AB
#4F90AB
oklch(62.1% 0.078 227.1)
- #AE785D
#AE785D
oklch(62.1% 0.078 47.4)
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 #4F90AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.031
- Off Blue #5684AE ΔE 0.036
- Faded Blue #658CBB ΔE 0.039
- Blue Grey #758DA3 ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.044
- Blue NCS #118AB2 ΔE 0.044
- Cool Blue #4984B8 ΔE 0.046
- Steel Blue #4682B4 ΔE 0.048
Use #4F90AB 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.