#4284A2
Closest named color: Cerulean (#457B9D). oklch(58.2% 0.081 229.9), rgb(66, 132, 162).
Aa
Black text reads best on this color (5.05:1).
About this color
#4284A2 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.081 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.025 away. Black text reads best on it, at 5.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #4284A2 |
| RGB | rgb(66, 132, 162) |
| HSL | hsl(199, 42%, 45%) |
| OKLCH | oklch(58.2% 0.081 229.9) |
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 #4284A2 | 4.15:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #4284A2 | 5.05:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #4284A2 text on white | 4.15:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #4284A2 text on black | 5.05:1 | AA | Lc -33.2 | 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
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE4
oklch(88.5% 0.02 229.1)
-
Step 300
300
#A9C6D4
oklch(81% 0.037 228.5)
-
Step 400
400
#7BA8BE
oklch(70.7% 0.058 229.7)
-
Step 500
500
#5792AE
oklch(63.1% 0.075 230)
-
Step 600
600 (this color)
#4284A2
oklch(58.2% 0.081 229.9)
-
Step 700
700
#2B6883
oklch(48.9% 0.076 230.2)
-
Step 800
800
#25556B
oklch(42.6% 0.063 230.6)
-
Step 900
900
#244657
oklch(37.6% 0.049 231.8)
-
Step 950
950
#162933
oklch(26.9% 0.031 232.5)
#4284A2 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) | #7582A4 | 0.058 |
| Deuteranopia (no green cones) | #6778A2 | 0.050 |
| Tritanopia (no blue cones) | #008C8E | 0.054 |
| Achromatopsia (no color) | #7C7C7C | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4284A2
#4284A2
oklch(58.2% 0.081 229.9)
- #A26D4E
#A26D4E
oklch(58.3% 0.081 50.9)
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 #4284A2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.025
- Stormy Blue #507B9C ΔE 0.027
- Off Blue #5684AE ΔE 0.029
- Steel Blue #4682B4 ΔE 0.031
- Dusty Blue #5A86AD ΔE 0.031
- Teal Blue #01889F ΔE 0.032
- Blue NCS #118AB2 ΔE 0.032
- Cool Blue #4984B8 ΔE 0.036
Use #4284A2 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.