#455DBC
Closest named color: Iris (#6258C4). oklch(51.1% 0.152 269.7), rgb(69, 93, 188).
Aa
White text reads best on this color (5.92:1).
About this color
#455DBC is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.152 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.043 away. White text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.54:1 |
| White text | 5.92:1 |
Values
| HEX | #455DBC |
| RGB | rgb(69, 93, 188) |
| HSL | hsl(228, 47%, 50%) |
| OKLCH | oklch(51.1% 0.152 269.7) |
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 #455DBC | 5.92:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #455DBC | 3.54:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #455DBC text on white | 5.92:1 | AA | Lc 79.3 | Fine for body text |
| #455DBC text on black | 3.54:1 | AA large text | Lc -22.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F5
oklch(88.6% 0.04 268.5)
-
Step 300
300
#AEBFF1
oklch(80.9% 0.073 270.1)
-
Step 400
400
#849CEA
oklch(70.6% 0.118 270.2)
-
Step 500
500
#6682E3
oklch(63.1% 0.149 269.6)
-
Step 600
600
#4F69D1
oklch(55.5% 0.163 269.9)
-
Step 700
700 (this color)
#455DBC
oklch(51.1% 0.152 269.7)
-
Step 800
800
#354893
oklch(42.8% 0.125 269.8)
-
Step 900
900
#2D3D75
oklch(37.7% 0.098 269.3)
-
Step 950
950
#1B2445
oklch(27.1% 0.063 270.3)
#455DBC 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) | #286ABF | 0.039 |
| Deuteranopia (no green cones) | #055FBA | 0.044 |
| Tritanopia (no blue cones) | #007383 | 0.129 |
| Achromatopsia (no color) | #646464 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455DBC
#455DBC
oklch(51.1% 0.152 269.7)
- #7E6300
#7E6300
oklch(51.2% 0.105 90)
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 #455DBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.043
- Mid Blue #276AB3 ΔE 0.045
- French Blue #436BAD ΔE 0.048
- Warm Blue #4B57DB ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.059
- Royal Blue #4169E1 ΔE 0.062
- Light Indigo #6D5ACF ΔE 0.064
Use #455DBC 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.