#3598AB
Closest named color: Sea (#3C9992). oklch(63.1% 0.094 212.9), rgb(53, 152, 171).
Aa
Black text reads best on this color (6.23:1).
About this color
#3598AB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.094 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.039 away. Black text reads best on it, at 6.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.23:1 |
| White text | 3.37:1 |
Values
| HEX | #3598AB |
| RGB | rgb(53, 152, 171) |
| HSL | hsl(190, 53%, 44%) |
| OKLCH | oklch(63.1% 0.094 212.9) |
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 #3598AB | 3.37:1 | AA large text | Lc -66.3 | Content text, not long reading |
| Black text on #3598AB | 6.23:1 | AA | Lc 43.2 | Non-text elements, placeholder text |
| #3598AB text on white | 3.37:1 | AA large text | Lc 60.9 | Content text, not long reading |
| #3598AB text on black | 6.23:1 | AA | Lc -40.8 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0ECEF
oklch(93.5% 0.013 214.4)
-
Step 200
200
#C7DEE3
oklch(88.5% 0.025 212.2)
-
Step 300
300
#9FC9D2
oklch(80.9% 0.046 212.2)
-
Step 400
400
#68ADBC
oklch(70.7% 0.073 213.1)
-
Step 500
500 (this color)
#3598AB
oklch(63.1% 0.094 212.9)
-
Step 600
600
#008295
oklch(55.7% 0.097 212.5)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900
#0C4A55
oklch(37.8% 0.061 212.9)
-
Step 950
950
#0B2B32
oklch(26.9% 0.039 214.8)
#3598AB 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) | #8A93AC | 0.086 |
| Deuteranopia (no green cones) | #7987AB | 0.077 |
| Tritanopia (no blue cones) | #00A09E | 0.039 |
| Achromatopsia (no color) | #8C8C8C | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3598AB
#3598AB
oklch(63.1% 0.094 212.9)
- #BB7464
#BB7464
oklch(63.1% 0.094 33.4)
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 #3598AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.039
- Teal Green #0A9396 ΔE 0.039
- Cadet Blue #5F9EA0 ΔE 0.044
- Blue NCS #118AB2 ΔE 0.050
- Persian Green #2A9D8F ΔE 0.051
- Blue Green #0F9B8E ΔE 0.052
- Teal Blue #01889F ΔE 0.055
- Dusty Teal #4C9085 ΔE 0.055
Use #3598AB 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.