#4299A5
Closest named color: Sea (#3C9992). oklch(63.5% 0.084 207.6), rgb(66, 153, 165).
Aa
Black text reads best on this color (6.33:1).
About this color
#4299A5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.084 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.030 away. Black text reads best on it, at 6.33:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.33:1 |
| White text | 3.31:1 |
Values
| HEX | #4299A5 |
| RGB | rgb(66, 153, 165) |
| HSL | hsl(187, 43%, 45%) |
| OKLCH | oklch(63.5% 0.084 207.6) |
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 #4299A5 | 3.31:1 | AA large text | Lc -65.8 | Content text, not long reading |
| Black text on #4299A5 | 6.33:1 | AA | Lc 43.7 | Non-text elements, placeholder text |
| #4299A5 text on white | 3.31:1 | AA large text | Lc 60.3 | Content text, not long reading |
| #4299A5 text on black | 6.33:1 | AA | Lc -41.4 | 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
#F1F6F7
oklch(97% 0.005 211)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C9DEE1
oklch(88.6% 0.023 207.1)
-
Step 300
300
#A2C9CE
oklch(80.9% 0.042 206)
-
Step 400
400
#6EADB6
oklch(70.8% 0.066 207.2)
-
Step 500
500 (this color)
#4299A5
oklch(63.5% 0.084 207.6)
-
Step 600
600
#12828F
oklch(55.6% 0.092 207.6)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#095963
oklch(42.6% 0.07 208.5)
-
Step 900
900
#154A51
oklch(37.8% 0.055 207.6)
-
Step 950
950
#0F2B2F
oklch(26.9% 0.034 207.9)
#4299A5 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) | #8D94A6 | 0.081 |
| Deuteranopia (no green cones) | #7E88A5 | 0.075 |
| Tritanopia (no blue cones) | #009F9D | 0.034 |
| Achromatopsia (no color) | #8D8D8D | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4299A5
#4299A5
oklch(63.5% 0.084 207.6)
- #B8776E
#B8776E
oklch(63.5% 0.084 28.2)
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 #4299A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.030
- Cadet Blue #5F9EA0 ΔE 0.032
- Teal Green #0A9396 ΔE 0.040
- Persian Green #2A9D8F ΔE 0.043
- Dull Teal #5F9E8F ΔE 0.046
- Grey Teal #5E9B8A ΔE 0.047
- Blue Green #0F9B8E ΔE 0.047
- Dusty Teal #4C9085 ΔE 0.047
Use #4299A5 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.