#4091AB
Closest named color: Blue NCS (#118AB2). oklch(61.7% 0.087 222.1), rgb(64, 145, 171).
Aa
Black text reads best on this color (5.85:1).
About this color
#4091AB is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.087 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.036 away. Black text reads best on it, at 5.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.85:1 |
| White text | 3.58:1 |
Values
| HEX | #4091AB |
| RGB | rgb(64, 145, 171) |
| HSL | hsl(195, 46%, 46%) |
| OKLCH | oklch(61.7% 0.087 222.1) |
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 #4091AB | 3.58:1 | AA large text | Lc -68.7 | Content text, not long reading |
| Black text on #4091AB | 5.85:1 | AA | Lc 40.9 | Non-text elements, placeholder text |
| #4091AB text on white | 3.58:1 | AA large text | Lc 63.2 | Content text, not long reading |
| #4091AB text on black | 5.85:1 | 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
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C9DDE4
oklch(88.5% 0.023 220.8)
-
Step 300
300
#A3C7D5
oklch(80.8% 0.043 223.5)
-
Step 400
400
#6FABBF
oklch(70.8% 0.069 221)
-
Step 500
500 (this color)
#4091AB
oklch(61.7% 0.087 222.1)
-
Step 600
600
#1D7F9B
oklch(55.6% 0.095 222.3)
-
Step 700
700
#0A6B84
oklch(49% 0.088 222)
-
Step 800
800
#10586C
oklch(42.8% 0.073 221.9)
-
Step 900
900
#184857
oklch(37.6% 0.057 222.2)
-
Step 950
950
#102A33
oklch(26.9% 0.036 223.3)
#4091AB 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 | 0.071 |
| Deuteranopia (no green cones) | #7282AB | 0.063 |
| Tritanopia (no blue cones) | #009999 | 0.049 |
| Achromatopsia (no color) | #878787 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4091AB
#4091AB
oklch(61.7% 0.087 222.1)
- #B2735B
#B2735B
oklch(61.6% 0.088 41.6)
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 #4091AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.036
- Dusty Blue #5A86AD ΔE 0.038
- Off Blue #5684AE ΔE 0.042
- Teal Blue #01889F ΔE 0.044
- Teal Green #0A9396 ΔE 0.045
- Cool Blue #4984B8 ΔE 0.048
- Faded Blue #658CBB ΔE 0.048
- Steel Blue #4682B4 ΔE 0.049
Use #4091AB 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.