#4F90C8
Closest named color: Faded Blue (#658CBB). oklch(63.4% 0.108 246.5), rgb(79, 144, 200).
Aa
Black text reads best on this color (6.15:1).
About this color
#4F90C8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.108 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.027 away. Black text reads best on it, at 6.15:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.15:1 |
| White text | 3.41:1 |
Values
| HEX | #4F90C8 |
| RGB | rgb(79, 144, 200) |
| HSL | hsl(208, 52%, 55%) |
| OKLCH | oklch(63.4% 0.108 246.5) |
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 #4F90C8 | 3.41:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #4F90C8 | 6.15:1 | AA | Lc 42.6 | Non-text elements, placeholder text |
| #4F90C8 text on white | 3.41:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #4F90C8 text on black | 6.15:1 | AA | Lc -40.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADCEC
oklch(88.6% 0.029 244.9)
-
Step 300
300
#A6C5E1
oklch(81% 0.052 245.8)
-
Step 400
400
#74A6D3
oklch(70.7% 0.085 246.5)
-
Step 500
500 (this color)
#4F90C8
oklch(63.4% 0.108 246.5)
-
Step 600
600
#2F78B4
oklch(55.6% 0.118 247)
-
Step 700
700
#20659B
oklch(49.1% 0.11 246.6)
-
Step 800
800
#1D527D
oklch(42.5% 0.091 246.7)
-
Step 900
900
#1E4565
oklch(37.8% 0.071 245.9)
-
Step 950
950
#13283B
oklch(26.9% 0.045 247.5)
#4F90C8 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) | #7892CA | 0.046 |
| Deuteranopia (no green cones) | #6886C7 | 0.035 |
| Tritanopia (no blue cones) | #009DA3 | 0.086 |
| Achromatopsia (no color) | #8B8B8B | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F90C8
#4F90C8
oklch(63.4% 0.108 246.5)
- #B67C3C
#B67C3C
oklch(63.3% 0.108 66.2)
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 #4F90C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.027
- Cool Blue #4984B8 ΔE 0.039
- Dusty Blue #5A86AD ΔE 0.043
- Dark Sky Blue #448EE4 ΔE 0.045
- Off Blue #5684AE ΔE 0.045
- Steel Blue #4682B4 ΔE 0.047
- Water Blue #0E87CC ΔE 0.049
- Blue NCS #118AB2 ΔE 0.055
Use #4F90C8 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.