#2584A4
Closest named color: Teal Blue (#01889F). oklch(57.4% 0.097 225.5), rgb(37, 132, 164).
Aa
Black text reads best on this color (4.91:1).
About this color
#2584A4 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.097 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.019 away. Black text reads best on it, at 4.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #2584A4 |
| RGB | rgb(37, 132, 164) |
| HSL | hsl(195, 63%, 39%) |
| OKLCH | oklch(57.4% 0.097 225.5) |
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 #2584A4 | 4.27:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #2584A4 | 4.91:1 | AA | Lc 34.9 | Non-text elements, placeholder text |
| #2584A4 text on white | 4.27:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #2584A4 text on black | 4.91:1 | AA | Lc -32.5 | 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 600.
-
Step 50
50
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A3C7D6
oklch(80.8% 0.044 225.1)
-
Step 400
400
#6FAAC2
oklch(70.6% 0.071 225.6)
-
Step 500
500
#4595B3
oklch(63.2% 0.09 225.6)
-
Step 600
600 (this color)
#2584A4
oklch(57.4% 0.097 225.5)
-
Step 700
700
#0A6B87
oklch(49.1% 0.09 224.7)
-
Step 800
800
#10576E
oklch(42.7% 0.075 225.5)
-
Step 900
900
#184859
oklch(37.7% 0.058 225.1)
-
Step 950
950
#102A34
oklch(27% 0.037 225.8)
#2584A4 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) | #7281A6 | 0.073 |
| Deuteranopia (no green cones) | #6175A4 | 0.064 |
| Tritanopia (no blue cones) | #008D8E | 0.051 |
| Achromatopsia (no color) | #7A7A7A | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2584A4
#2584A4
oklch(57.4% 0.097 225.5)
- #A86546
#A86546
oklch(57.4% 0.098 45.1)
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 #2584A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.019
- Blue NCS #118AB2 ΔE 0.024
- Cerulean #457B9D ΔE 0.031
- Steel Blue #4682B4 ΔE 0.037
- Stormy Blue #507B9C ΔE 0.038
- Ocean #017B92 ΔE 0.039
- Nice Blue #107AB0 ΔE 0.041
- Cool Blue #4984B8 ΔE 0.043
Use #2584A4 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.