#25819A
Closest named color: Teal Blue (#01889F). oklch(56.2% 0.091 220.3), rgb(37, 129, 154).
Aa
Black text reads best on this color (4.68:1).
About this color
#25819A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.091 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.021 away. Black text reads best on it, at 4.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #25819A |
| RGB | rgb(37, 129, 154) |
| HSL | hsl(193, 61%, 37%) |
| OKLCH | oklch(56.2% 0.091 220.3) |
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 #25819A | 4.48:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #25819A | 4.68:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #25819A text on white | 4.48:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #25819A text on black | 4.68:1 | AA | Lc -30.9 | 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 600.
-
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
#A4C7D3
oklch(80.8% 0.041 220.6)
-
Step 400
400
#71ABBD
oklch(70.8% 0.066 219.4)
-
Step 500
500
#4895AD
oklch(63.1% 0.084 221)
-
Step 600
600 (this color)
#25819A
oklch(56.2% 0.091 220.3)
-
Step 700
700
#126B82
oklch(49% 0.085 220.8)
-
Step 800
800
#15586A
oklch(42.9% 0.07 220.3)
-
Step 900
900
#1A4856
oklch(37.7% 0.055 221.2)
-
Step 950
950
#112A32
oklch(26.9% 0.034 221.3)
#25819A 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) | #727D9B | 0.076 |
| Deuteranopia (no green cones) | #62729A | 0.067 |
| Tritanopia (no blue cones) | #008989 | 0.043 |
| Achromatopsia (no color) | #777777 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25819A
#25819A
oklch(56.2% 0.091 220.3)
- #A2624B
#A2624B
oklch(56.2% 0.09 40.5)
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 #25819A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.021
- Ocean #017B92 ΔE 0.025
- Cerulean #457B9D ΔE 0.029
- Stormy Blue #507B9C ΔE 0.037
- Blue NCS #118AB2 ΔE 0.039
- Sea Blue #047495 ΔE 0.043
- Dull Blue #49759C ΔE 0.043
- Teal #008080 ΔE 0.045
Use #25819A 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.