#4299BC
Closest named color: Faded Blue (#658CBB). oklch(64.5% 0.098 227.8), rgb(66, 153, 188).
Aa
Black text reads best on this color (6.51:1).
About this color
#4299BC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.098 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.045 away. Black text reads best on it, at 6.51:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.51:1 |
| White text | 3.22:1 |
Values
| HEX | #4299BC |
| RGB | rgb(66, 153, 188) |
| HSL | hsl(197, 48%, 50%) |
| OKLCH | oklch(64.5% 0.098 227.8) |
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 #4299BC | 3.22:1 | AA large text | Lc -64.7 | Content text, not long reading |
| Black text on #4299BC | 6.51:1 | AA | Lc 44.8 | Non-text elements, placeholder text |
| #4299BC text on white | 3.22:1 | AA large text | Lc 59.2 | Large or bold text, headings |
| #4299BC text on black | 6.51:1 | AA | Lc -42.5 | 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 500.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A1C7D9
oklch(80.8% 0.048 228.3)
-
Step 400
400
#6BAAC6
oklch(70.6% 0.077 228.1)
-
Step 500
500 (this color)
#4299BC
oklch(64.5% 0.098 227.8)
-
Step 600
600
#0A7FA4
oklch(55.7% 0.106 227.6)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#045772
oklch(42.7% 0.082 228)
-
Step 900
900
#13485C
oklch(37.7% 0.064 227.7)
-
Step 950
950
#0E2A36
oklch(27% 0.04 229.1)
#4299BC 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) | #8796BE | 0.072 |
| Deuteranopia (no green cones) | #768ABC | 0.063 |
| Tritanopia (no blue cones) | #00A3A4 | 0.059 |
| Achromatopsia (no color) | #8F8F8F | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4299BC
#4299BC
oklch(64.5% 0.098 227.8)
- #BE7B58
#BE7B58
oklch(64.5% 0.097 48)
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 #4299BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.045
- Dusty Blue #5A86AD ΔE 0.053
- Cadet Blue #5F9EA0 ΔE 0.054
- Blue NCS #118AB2 ΔE 0.054
- Off Blue #5684AE ΔE 0.058
- Silver Lake Blue #778DA9 ΔE 0.059
- Cool Blue #4984B8 ΔE 0.059
- Blue Grey #758DA3 ΔE 0.060
Use #4299BC 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.