#4E91B8
Closest named color: Faded Blue (#658CBB). oklch(62.8% 0.09 236.2), rgb(78, 145, 184).
Aa
Black text reads best on this color (6.06:1).
About this color
#4E91B8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.090 and its hue 236°. 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 6.06:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.06:1 |
| White text | 3.46:1 |
Values
| HEX | #4E91B8 |
| RGB | rgb(78, 145, 184) |
| HSL | hsl(202, 43%, 51%) |
| OKLCH | oklch(62.8% 0.09 236.2) |
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 #4E91B8 | 3.46:1 | AA large text | Lc -67.5 | Content text, not long reading |
| Black text on #4E91B8 | 6.06:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #4E91B8 text on white | 3.46:1 | AA large text | Lc 62.0 | Content text, not long reading |
| #4E91B8 text on black | 6.06:1 | AA | Lc -39.7 | 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
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE7
oklch(88.5% 0.024 236)
-
Step 300
300
#A6C6DA
oklch(81% 0.045 235.5)
-
Step 400
400
#75A8C7
oklch(70.7% 0.071 235.8)
-
Step 500
500 (this color)
#4E91B8
oklch(62.8% 0.09 236.2)
-
Step 600
600
#2F7BA5
oklch(55.5% 0.098 236.7)
-
Step 700
700
#20688D
oklch(49.1% 0.091 235.8)
-
Step 800
800
#1D5573
oklch(42.7% 0.076 236.1)
-
Step 900
900
#1F465D
oklch(37.7% 0.059 237.1)
-
Step 950
950
#132936
oklch(26.9% 0.037 236.3)
#4E91B8 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) | #7F90BA | 0.055 |
| Deuteranopia (no green cones) | #7085B7 | 0.046 |
| Tritanopia (no blue cones) | #009B9E | 0.067 |
| Achromatopsia (no color) | #8A8A8A | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E91B8
#4E91B8
oklch(62.8% 0.09 236.2)
- #B27A51
#B27A51
oklch(62.8% 0.09 56.5)
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 #4E91B8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.027
- Dusty Blue #5A86AD ΔE 0.032
- Off Blue #5684AE ΔE 0.036
- Cool Blue #4984B8 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.044
- Blue NCS #118AB2 ΔE 0.045
- Silver Lake Blue #778DA9 ΔE 0.047
- Blue Grey #758DA3 ΔE 0.048
Use #4E91B8 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.