#E5645A
Closest named color: Burnt Sienna (#E76F51). oklch(66.1% 0.163 26.9), rgb(229, 100, 90).
Aa
Black text reads best on this color (6.30:1).
About this color
#E5645A is a medium-light, vivid red. In OKLCH its lightness is 66%, its chroma 0.163 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.029 away. Black text reads best on it, at 6.30:1.
| Hue family | Reds |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.163) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.30:1 |
| White text | 3.33:1 |
Values
| HEX | #E5645A |
| RGB | rgb(229, 100, 90) |
| HSL | hsl(4, 73%, 63%) |
| OKLCH | oklch(66.1% 0.163 26.9) |
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 #E5645A | 3.33:1 | AA large text | Lc -65.5 | Content text, not long reading |
| Black text on #E5645A | 6.30:1 | AA | Lc 44.0 | Non-text elements, placeholder text |
| #E5645A text on white | 3.33:1 | AA large text | Lc 60.1 | Content text, not long reading |
| #E5645A text on black | 6.30:1 | AA | Lc -41.7 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E2
oklch(93.5% 0.023 24.1)
-
Step 200
200
#F5CFCA
oklch(88.5% 0.044 26.8)
-
Step 300
300
#F0ADA5
oklch(80.9% 0.08 26.6)
-
Step 400
400
#E57F75
oklch(70.6% 0.128 26.6)
-
Step 500
500 (this color)
#E5645A
oklch(66.1% 0.163 26.9)
-
Step 600
600
#C63B35
oklch(55.7% 0.177 27)
-
Step 700
700
#AA2B28
oklch(49% 0.164 26.7)
-
Step 800
800
#8A2622
oklch(42.6% 0.136 26.9)
-
Step 900
900
#6F2521
oklch(37.6% 0.106 26.5)
-
Step 950
950
#421714
oklch(27.1% 0.068 26.5)
#E5645A 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) | #847C58 | 0.172 |
| Deuteranopia (no green cones) | #A59757 | 0.157 |
| Tritanopia (no blue cones) | #FA4C62 | 0.055 |
| Achromatopsia (no color) | #8D8D8D | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E5645A
#E5645A
oklch(66.1% 0.163 26.9)
- #00A6B5
#00A6B5
oklch(66.2% 0.113 206.2)
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 #E5645A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.029
- Pastel Red #DB5856 ΔE 0.033
- Pale Red #D9544D ΔE 0.042
- Grapefruit #FD5956 ΔE 0.044
- Coral Pink #FF6163 ΔE 0.049
- Tomato #FF6347 ΔE 0.051
- Indian Red #CD5C5C ΔE 0.051
- Dark Peach #DE7E5D ΔE 0.056
Use #E5645A 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.