#4191B9
Closest named color: Dusty Blue (#5A86AD). oklch(62.4% 0.098 233.2), rgb(65, 145, 185).
Aa
Black text reads best on this color (5.97:1).
About this color
#4191B9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.098 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.035 away. Black text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.97:1 |
| White text | 3.51:1 |
Values
| HEX | #4191B9 |
| RGB | rgb(65, 145, 185) |
| HSL | hsl(200, 48%, 49%) |
| OKLCH | oklch(62.4% 0.098 233.2) |
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 #4191B9 | 3.51:1 | AA large text | Lc -68.0 | Content text, not long reading |
| Black text on #4191B9 | 5.97:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #4191B9 text on white | 3.51:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #4191B9 text on black | 5.97:1 | AA | Lc -39.2 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C7DB
oklch(81% 0.048 232.5)
-
Step 400
400
#6EA9C9
oklch(70.6% 0.077 233.1)
-
Step 500
500 (this color)
#4191B9
oklch(62.4% 0.098 233.2)
-
Step 600
600
#1B7DA8
oklch(55.6% 0.107 233.4)
-
Step 700
700
#086990
oklch(49.1% 0.1 233.6)
-
Step 800
800
#0F5675
oklch(42.8% 0.083 233.4)
-
Step 900
900
#17475E
oklch(37.7% 0.064 233.1)
-
Step 950
950
#0F2A37
oklch(27.1% 0.041 231.9)
#4191B9 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) | #7D90BB | 0.063 |
| Deuteranopia (no green cones) | #6D83B8 | 0.055 |
| Tritanopia (no blue cones) | #009C9E | 0.065 |
| Achromatopsia (no color) | #898989 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4191B9
#4191B9
oklch(62.4% 0.098 233.2)
- #B6764C
#B6764C
oklch(62.4% 0.099 53.2)
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 #4191B9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.035
- Blue NCS #118AB2 ΔE 0.036
- Faded Blue #658CBB ΔE 0.036
- Cool Blue #4984B8 ΔE 0.037
- Off Blue #5684AE ΔE 0.038
- Steel Blue #4682B4 ΔE 0.042
- Water Blue #0E87CC ΔE 0.053
- Teal Blue #01889F ΔE 0.056
Use #4191B9 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.