#4591A9
Closest named color: Dusty Blue (#5A86AD). oklch(61.8% 0.083 221.3), rgb(69, 145, 169).
Aa
Black text reads best on this color (5.87:1).
About this color
#4591A9 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.083 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.038 away. Black text reads best on it, at 5.87:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.87:1 |
| White text | 3.57:1 |
Values
| HEX | #4591A9 |
| RGB | rgb(69, 145, 169) |
| HSL | hsl(194, 42%, 47%) |
| OKLCH | oklch(61.8% 0.083 221.3) |
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 #4591A9 | 3.57:1 | AA large text | Lc -68.6 | Content text, not long reading |
| Black text on #4591A9 | 5.87:1 | AA | Lc 40.9 | Non-text elements, placeholder text |
| #4591A9 text on white | 3.57:1 | AA large text | Lc 63.1 | Content text, not long reading |
| #4591A9 text on black | 5.87:1 | AA | Lc -38.5 | 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
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CADDE4
oklch(88.5% 0.023 221.8)
-
Step 300
300
#A5C7D3
oklch(80.9% 0.04 221.2)
-
Step 400
400
#72AABD
oklch(70.6% 0.065 221.3)
-
Step 500
500 (this color)
#4591A9
oklch(61.8% 0.083 221.3)
-
Step 600
600
#257F99
oklch(55.6% 0.09 221.6)
-
Step 700
700
#156B82
oklch(49.1% 0.084 221.1)
-
Step 800
800
#16576A
oklch(42.6% 0.07 221.9)
-
Step 900
900
#1B4856
oklch(37.7% 0.054 221.6)
-
Step 950
950
#112A32
oklch(26.9% 0.034 221.3)
#4591A9 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) | #838EAA | 0.069 |
| Deuteranopia (no green cones) | #7483A9 | 0.061 |
| Tritanopia (no blue cones) | #009999 | 0.049 |
| Achromatopsia (no color) | #878787 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4591A9
#4591A9
oklch(61.8% 0.083 221.3)
- #B0755E
#B0755E
oklch(61.8% 0.082 42.1)
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 #4591A9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.038
- Blue NCS #118AB2 ΔE 0.040
- Off Blue #5684AE ΔE 0.042
- Teal Green #0A9396 ΔE 0.045
- Teal Blue #01889F ΔE 0.046
- Faded Blue #658CBB ΔE 0.048
- Sea #3C9992 ΔE 0.049
- Blue Grey #758DA3 ΔE 0.050
Use #4591A9 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.