#2598B4
Closest named color: Blue NCS (#118AB2). oklch(63.1% 0.105 218.7), rgb(37, 152, 180).
Aa
Black text reads best on this color (6.22:1).
About this color
#2598B4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.105 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.043 away. Black text reads best on it, at 6.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.22:1 |
| White text | 3.37:1 |
Values
| HEX | #2598B4 |
| RGB | rgb(37, 152, 180) |
| HSL | hsl(192, 66%, 43%) |
| OKLCH | oklch(63.1% 0.105 218.7) |
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 #2598B4 | 3.37:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #2598B4 | 6.22:1 | AA | Lc 43.3 | Non-text elements, placeholder text |
| #2598B4 text on white | 3.37:1 | AA large text | Lc 60.8 | Content text, not long reading |
| #2598B4 text on black | 6.22:1 | AA | Lc -40.9 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C5DEE6
oklch(88.5% 0.029 219)
-
Step 300
300
#9CC9D7
oklch(80.9% 0.051 218.8)
-
Step 400
400
#61ADC3
oklch(70.7% 0.082 218.7)
-
Step 500
500 (this color)
#2598B4
oklch(63.1% 0.105 218.7)
-
Step 600
600
#00819B
oklch(55.7% 0.1 218.5)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800
#00596B
oklch(42.8% 0.077 217.7)
-
Step 900
900
#004A5A
oklch(37.8% 0.068 218.5)
-
Step 950
950
#072B35
oklch(26.9% 0.043 220.5)
#2598B4 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) | #8694B6 | 0.088 |
| Deuteranopia (no green cones) | #7386B4 | 0.079 |
| Tritanopia (no blue cones) | #00A1A1 | 0.046 |
| Achromatopsia (no color) | #8C8C8C | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2598B4
#2598B4
oklch(63.1% 0.105 218.7)
- #BF7259
#BF7259
oklch(63% 0.105 38.7)
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 #2598B4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.043
- Teal Green #0A9396 ΔE 0.048
- Sea #3C9992 ΔE 0.053
- Teal Blue #01889F ΔE 0.054
- Cadet Blue #5F9EA0 ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.058
- Faded Blue #658CBB ΔE 0.060
- Off Blue #5684AE ΔE 0.061
Use #2598B4 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.